@charset "UTF-8";
  #history_link_area .link_list li a.sp_only{
  display: none;
}

  /* color */
  #history01.contents h3{
    background-color: #EBC7B5;
  }
  #history02.contents h3{
    background-color: #E6D47E;
  }
  #history03.contents h3{
    background-color: #C3DE85;
  }
  #history04.contents h3{
    background-color: #A0DED9;
  }
  #history05.contents h3{
    background-color: #A6CFF7;
  }
  #history06.contents h3{
    background-color: #CFBEF7;
  }
  #history07.contents h3{
    background-color: #F7BED7;
  }
  #history08.contents h3{
    background-color: #F6C674;
  }
  #history01.contents h3 .number{
    color: #CC9F85;
  }
  #history02.contents h3 .number{
    color: #D4B82F;
  }
  #history03.contents h3 .number{
    color: #88B81A;
  }
  #history04.contents h3 .number{
    color: #56B8AF;
  }
  #history05.contents h3 .number{
    color: #5D9EDE;
  }
  #history06.contents h3 .number{
    color: #AB91EB;
  }
  #history07.contents h3 .number{
    color: #EB86B1;
  }
  #history08.contents h3 .number{
    color: #EE9E00;
  }
  #history01.contents .text_area{
    border-color: #EBC7B5;
  }
  #history02.contents .text_area{
    border-color: #E6D47E;
  }
  #history03.contents .text_area{
    border-color: #C3DE85;
  }
  #history04.contents .text_area{
    border-color: #A0DED9;
  }
  #history05.contents .text_area{
    border-color: #A6CFF7;
  }
  #history06.contents .text_area{
    border-color: #CFBEF7;
  }
  #history07.contents .text_area{
    border-color: #F7BED7;
  }
  #history08.contents .text_area{
    border-color: #F6C674;
  }
  #history01.contents .event_box{
    background-color: rgba(235, 199, 181, 0.2);
  }
  #history02.contents .event_box{
    background-color: rgba(230, 212, 126, 0.2);
  }
  #history03.contents .event_box{
    background-color: rgba(195, 222, 133, 0.2);
  }
  #history04.contents .event_box{
    background-color: rgba(160, 222, 217, 0.2);
  }
  #history05.contents .event_box{
    background-color: rgba(166, 207, 247, 0.2);
  }
  #history06.contents .event_box{
    background-color: rgba(207, 190, 247, 0.2);
  }
  #history07.contents .event_box{
    background-color: rgba(235, 134, 177, 0.2);
  }
  #history08.contents .event_box{
    background-color: rgba(251, 227, 186, 0.2);
  }
  #history01.contents .event_box .event_box_unit:first-of-type{
    border-color: #EBC7B5;
  }
  #history02.contents .event_box .event_box_unit:first-of-type{
    border-color: #D4B82F;
  }
  #history03.contents .event_box .event_box_unit:first-of-type{
    border-color: #88B81A;
  }
  #history04.contents .event_box .event_box_unit:first-of-type{
    border-color: #56B8AF;
  }
  #history05.contents .event_box .event_box_unit:first-of-type{
    border-color: #5D9EDE;
  }
  #history06.contents .event_box .event_box_unit:first-of-type{
    border-color: #AB91EB;
  }
  #history07.contents .event_box .event_box_unit:first-of-type{
    border-color: #EB86B1;
  }
  #history08.contents .event_box .event_box_unit:first-of-type{
    border-color: #EE9E00;
  }
  #history01.contents .history_table_box table:first-of-type{
    border-color: #EBC7B5;
  }
  #history02.contents .history_table_box table:first-of-type{
    border-color: #D4B82F;
  }
  #history03.contents .history_table_box table:first-of-type{
    border-color: #88B81A;
  }
  #history04.contents .history_table_box table:first-of-type{
    border-color: #56B8AF;
  }
  #history05.contents .history_table_box table:first-of-type{
    border-color: #5D9EDE;
  }
  #history06.contents .history_table_box table:first-of-type{
    border-color: #AB91EB;
  }
  #history07.contents .history_table_box table:first-of-type{
    border-color: #EB86B1;
  }
  #history08.contents .history_table_box table:first-of-type{
    border-color: #EE9E00;
  }
  #history01.contents .timeline_ttl h4{
    border-color: #EBC7B5;
    color: #CC9F85;
  }
  #history02.contents .timeline_ttl h4{
    color: #D4B82F;
    border-color: #E6D47E;
  }
  #history03.contents .timeline_ttl h4{
    color: #88B81A;
    border-color: #C3DE85;
  }
  #history04.contents .timeline_ttl h4{
    color: #56B8AF;
    border-color: #A0DED9;
  }
  #history05.contents .timeline_ttl h4{
    color: #5D9EDE;
    border-color: #A6CFF7;
  }
  #history06.contents .timeline_ttl h4{
    color: #AB91EB;
    border-color: #CFBEF7;
  }
  #history07.contents .timeline_ttl h4{
    color: #EB86B1;
    border-color: #F7BED7;
  }
  #history08.contents .timeline_ttl h4{
    color: #EE9E00;
    border-color: #F6C674;
  }
  #history01.contents .timeline_ttl .timeline_btn li.link_off{
    color: #CC9F85;
  }
  #history02.contents .timeline_ttl .timeline_btn li.link_off{
    color: #D4B82F;
  }
  #history03.contents .timeline_ttl .timeline_btn li.link_off{
    color: #88B81A;
  }
  #history04.contents .timeline_ttl .timeline_btn li.link_off{
    color: #56B8AF;
  }
  #history05.contents .timeline_ttl .timeline_btn li.link_off{
    color: #5D9EDE;
  }
  #history06.contents .timeline_ttl .timeline_btn li.link_off{
    color: #AB91EB;
  }
  #history07.contents .timeline_ttl .timeline_btn li.link_off{
    color: #EB86B1;
  }
  #history08.contents .timeline_ttl .timeline_btn li.link_off{
    color: #EE9E00;
  }
  .contents .timeline_ttl .timeline_btn li.link_on{
    color: #3C3C43;
    font-weight: 700;
  }
  #history01.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #EBC7B5;
  }
  #history02.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #E6D47E;
  }
  #history03.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #C3DE85;
  }
  #history04.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #A0DED9;
  }
  #history05.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #A6CFF7;
  }
  #history06.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #CFBEF7;
  }
  #history07.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #F7BED7;
  }
  #history08.contents .timeline_ttl .timeline_btn li.link_on{
    background-color: #F6C674;
  }
  #history01.contents .timeline_contents:before{
    background-color: #EBC7B5;
  }
  #history02.contents .timeline_contents:before{
    background-color: #E6D47E;
  }
  #history03.contents .timeline_contents:before{
    background-color: #C3DE85;
  }
  #history04.contents .timeline_contents:before{
    background-color: #A0DED9;
  }
  #history05.contents .timeline_contents:before{
    background-color: #A6CFF7;
  }
  #history06.contents .timeline_contents:before{
    background-color: #CFBEF7;
  }
  #history07.contents .timeline_contents:before{
    background-color: #F7BED7;
  }
  #history08.contents .timeline_contents:before{
    background-color: #F6C674;
  }
  #history01.contents .timeline_contents .circle{
    background-color: #EBC7B5;
  }
  #history02.contents .timeline_contents .circle{
    background-color: #E6D47E;
  }
  #history03.contents .timeline_contents .circle{
    background-color: #C3DE85;
  }
  #history04.contents .timeline_contents .circle{
    background-color: #A0DED9;
  }
  #history05.contents .timeline_contents .circle{
    background-color: #A6CFF7;
  }
  #history06.contents .timeline_contents .circle{
    background-color: #CFBEF7;
  }
  #history07.contents .timeline_contents .circle{
    background-color: #F7BED7;
  }
  #history08.contents .timeline_contents .circle{
    background-color: #F6C674;
  }
  #history01.contents .timeline_contents p{
    color: #CC9F85;
  }
  #history02.contents .timeline_contents p{
    color: #D4B82F;
  }
  #history03.contents .timeline_contents p{
    color: #88B81A;
  }
  #history04.contents .timeline_contents p{
    color: #56B8AF;
  }
  #history05.contents .timeline_contents p{
    color: #5D9EDE;
  }
  #history06.contents .timeline_contents p{
    color: #AB91EB;
  }
  #history07.contents .timeline_contents p{
    color: #EB86B1;
  }
  #history08.contents .timeline_contents p{
    color: #EE9E00;
  }
  #history01.contents .tab_group {
    border-color: #EBC7B5;
  }
  #history02.contents .tab_group{
    border-color: #E6D47E;
  }
  #history03.contents .tab_group{
    border-color: #C3DE85;
  }
  #history04.contents .tab_group{
    border-color: #A0DED9;
  }
  #history05.contents .tab_group{
    border-color: #A6CFF7;
  }
  #history06.contents .tab_group{
    border-color: #CFBEF7;
  }
  #history07.contents .tab_group{
    border-color: #F7BED7;
  }
  #history08.contents .tab_group{
    border-color: #F6C674;
  }
  #history01.contents .tab_btn{
    border-color: #EBC7B5;
    background-color: #EBC7B5;
  }
  #history02.contents .tab_btn{
    border-color: #E6D47E;
    background-color: #E6D47E;
  }
  #history03.contents .tab_btn{
    border-color: #C3DE85;
    background-color: #C3DE85;
  }
  #history04.contents .tab_btn{
    border-color: #A0DED9;
    background-color: #A0DED9;
  }
  #history05.contents .tab_btn{
    border-color: #A6CFF7;
    background-color: #A6CFF7;
  }
  #history06.contents .tab_btn{
    border-color: #CFBEF7;
    background-color: #CFBEF7;
  }
  #history07.contents .tab_btn{
    border-color: #F7BED7;
    background-color: #F7BED7;
  }
  #history08.contents .tab_btn{
    border-color: #F6C674;
    background-color: #F6C674;
  }
  #history01.contents .tab_btn.show{
    color: #CC9F85;
  }
  #history02.contents .tab_btn.show{
    color: #D4B82F;
  }
  #history03.contents .tab_btn.show{
    color: #88B81A;
  }
  #history04.contents .tab_btn.show{
    color: #56B8AF;
  }
  #history05.contents .tab_btn.show{
    color: #5D9EDE;
  }
  #history06.contents .tab_btn.show{
    color: #AB91EB;
  }
  #history07.contents .tab_btn.show{
    color: #EB86B1;
  }
  #history08.contents .tab_btn.show{
    color: #EE9E00;
  }
  #history01.contents .tab_btn.show:after{
    border-color: transparent transparent #EBC7B5 transparent;
  }
  #history02.contents .tab_btn.show:after{
    border-color: transparent transparent #E6D47E transparent;
  }
  #history03.contents .tab_btn.show:after{
    border-color: transparent transparent #C3DE85 transparent;
  }
  #history04.contents .tab_btn.show:after{
    border-color: transparent transparent #A0DED9 transparent;
  }
  #history05.contents .tab_btn.show:after{
    border-color: transparent transparent #A6CFF7 transparent;
  }
  #history06.contents .tab_btn.show:after{
    border-color: transparent transparent #CFBEF7 transparent;
  }
  #history07.contents .tab_btn.show:after{
    border-color: transparent transparent #F7BED7 transparent;
  }
  #history08.contents .tab_btn.show:after{
    border-color: transparent transparent #F6C674 transparent;
  }
  /* #history_link_area_fix */

  #history_link_area_fix{
    position: fixed;
    top: -200px;
    z-index: 50;
    opacity: 0;
    background: #fff;
    width: 100%;
    left: 0;
    transition: all 0.5s 0s ease;
    box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.5);
  }

  #history_link_area_fix.m_fixed {
    opacity: 1;
  }

  #history_link_area_fix .history_link_area_ttl{
    margin-bottom: 25px;
    font-size: 1.125rem;
    font-weight: 700;
    text-align: center;
  }
  #history_link_area_fix .link_list{
    display: flex;
    justify-content: center;
    align-items: flex-start;
    margin: 0 auto;
    width: 78.8%;
    max-width: 883px;
    min-width: 528px;
  }
  #history_link_area_fix .link_list li{
    position: relative;
    width: 14.28%;
    font-size: 0.813rem;
    line-height: 1.28;
    font-weight: 700;
  }
  #history_link_area_fix .link_list li:before{
    content: "";
    position: absolute;
    top: 8px;
    right: -8px;
    width: 75%;
    height: 4px;
    z-index: -2;
  }
  #history_link_area_fix .link_list li:first-of-type:before{
    background-color: #CC9F85;
  }
  #history_link_area_fix .link_list li:nth-of-type(2):before{
    background-color: #D4B82F;
  }
  #history_link_area_fix .link_list li:nth-of-type(3):before{
    background-color: #88B81A;
  }
  #history_link_area_fix .link_list li:nth-of-type(4):before{
    background-color: #56B8AF;
  }
  #history_link_area_fix .link_list li:nth-of-type(5):before{
    background-color: #5D9EDE;
  }
  #history_link_area_fix .link_list li:nth-of-type(6):before{
    background-color: #AB91EB;
  }
  #history_link_area_fix .link_list li:nth-of-type(7):before{
    background-color: #EB86B1;
  }
  #history_link_area_fix .link_list li:nth-of-type(8):before{
    background-color: #EE9E00;
  }
  #history_link_area_fix .link_list li:nth-of-type(8):after{
    content: "";
    position: absolute;
    top: 2px;
    /*right: -19px;*/
    right: -12px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 0 8px 20px;
    border-color: transparent transparent transparent #EE9E00;
  }
  #history_link_area_fix .link_list li a{
    position: relative;
    display: inline-block;
  }
  #history_link_area_fix .link_list li.current:first-of-type{
    color: #CC9F85;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(2){
    color: #D4B82F;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(3){
    color: #88B81A;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(4){
    color: #56B8AF;
  }
 #history_link_area_fix .link_list li.current:nth-of-type(5){
    color: #5D9EDE;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(6){
    color: #AB91EB;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(7){
    color: #EB86B1;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(8){
    color: #EE9E00;
  }
  #history_link_area_fix .link_list li .number{
    position: relative;
    margin: 0 0 15px 21px;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1;
    color: #fff;
  }
  #history_link_area_fix .link_list li.current:first-of-type .number{
    color: #CC9F85;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(2) .number{
    color: #D4B82F;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(3) .number{
    color: #88B81A;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(4) .number{
    color: #56B8AF;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(5) .number{
    color: #5D9EDE;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(6) .number{
    color: #AB91EB;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(7) .number{
    color: #EB86B1;
  }
  #history_link_area_fix .link_list li.current:nth-of-type(8) .number{
    color: #EE9E00;
  }
  #history_link_area_fix .link_list li .number:before{
    content: "";
    position: absolute;
    top: -5.5px;
    left: -9.5px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    z-index: -1;
  }
  #history_link_area_fix .link_list li:first-of-type .number:before{
    background-color: #CC9F85;
    border: 3px solid #CC9F85;
  }
  #history_link_area_fix .link_list li:nth-of-type(2) .number:before{
    border: 3px solid #D4B82F;
    background-color: #D4B82F;
  }
  #history_link_area_fix .link_list li:nth-of-type(3) .number:before{
    border: 3px solid #88B81A;
    background-color: #88B81A;
  }
  #history_link_area_fix .link_list li:nth-of-type(4) .number:before{
    border: 3px solid #56B8AF;
    background-color: #56B8AF;
  }
  #history_link_area_fix .link_list li:nth-of-type(5) .number:before{
    border: 3px solid #5D9EDE;
    background-color: #5D9EDE;
  }
  #history_link_area_fix .link_list li:nth-of-type(6) .number:before{
    border: 3px solid #AB91EB;
    background-color: #AB91EB;
  }
  #history_link_area_fix .link_list li:nth-of-type(7) .number:before{
    border: 3px solid #EB86B1;
    background-color: #EB86B1;
  }
  #history_link_area_fix .link_list li:nth-of-type(8) .number:before{
    border: 3px solid #EE9E00;
    background-color: #EE9E00;
  }
  #history_link_area_fix .link_list li.current .number:before{
    top: -8px;
    left: -12px;
    width: 28px;
    height: 28px;
    background-color: #fff;
  }


@media screen and (min-width : 601px){
  /* mv */
  #main_box h2.main_box_mainImg{
    background-image: url("../../textbook_history/images/mainImg_pc.jpg");
  }

  /* history_link_area_fix */
  #history_link_area_fix{
    padding: 20px 0;
  }
  #history_link_area_fix .link_list li:not(.current) a:after{
    content: "";
    position: absolute;
    bottom: 12px;
    left: 116%;
    width: 10px;
    height: 11px;
    background-image: url(../../textbook_history/images/icon_anchor.png);
    background-repeat: no-repeat;
    background-size: contain;
  }


  /* history_link_area */
  #history_link_area{
    margin: 40px 0;
  }
  #history_link_area .link_list li:not(.current) a:after{
    content: "";
    position: absolute;
    bottom: 12px;
    left: 116%;
    width: 10px;
    height: 11px;
    background-image: url(../../textbook_history/images/icon_anchor.png);
    background-repeat: no-repeat;
    background-size: contain;
  }

  #history_link_area .link_list li a,
  #history_link_area_fix .link_list li a{
    transition: color .3s linear;
  }
  #history_link_area .link_list li a:hover,
  #history_link_area_fix .link_list li a:hover{
    opacity: 1;
  }
  #history_link_area .link_list li:not(.current) a:hover,
  #history_link_area_fix .link_list li:not(.current) a:hover{
    color: #77777b;
  }
  #history_link_area .link_list li a .number:before,
  #history_link_area_fix .link_list li a .number:before{
    transition: background-color .3s linear, border-color .3s linear;
  }
  #history_link_area .link_list li:first-of-type:not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:first-of-type:not(.current) a:hover .number:before{
    border-color: #dbbcaa;
    background-color: #dbbcaa;
  }
  #history_link_area .link_list li:nth-of-type(2):not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:nth-of-type(2):not(.current) a:hover .number:before{
    border-color: #e1cd6d;
    background-color: #e1cd6d;
  }
  #history_link_area .link_list li:nth-of-type(3):not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:nth-of-type(3):not(.current) a:hover .number:before{
    border-color: #accd5f;
    background-color: #accd5f;
  }
  #history_link_area .link_list li:nth-of-type(4):not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:nth-of-type(4):not(.current) a:hover .number:before{
    border-color: #89cdc7;
    background-color: #89cdc7;
  }
  #history_link_area .link_list li:nth-of-type(5):not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:nth-of-type(5):not(.current) a:hover .number:before{
    border-color: #8ebbe8;
    background-color: #8ebbe8;
  }
  #history_link_area .link_list li:nth-of-type(6):not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:nth-of-type(6):not(.current) a:hover .number:before{
    border-color: #c4b2f1;
    background-color: #c4b2f1;
  }
  #history_link_area .link_list li:nth-of-type(7):not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:nth-of-type(7):not(.current) a:hover .number:before{
    border-color: #f1aac8;
    background-color: #f1aac8;
  }
  #history_link_area .link_list li:nth-of-type(8):not(.current) a:hover .number:before,
  #history_link_area_fix .link_list li:nth-of-type(8):not(.current) a:hover .number:before{
    border-color: #F6C674;
    background-color: #F6C674;
  }
  .contents{
    padding-top: 101px;
    margin-top: -101px;
  }

  .history_index #history05.contents  h3{
    font-size: 1.75rem;
  }
  .history_index h3 span:nth-of-type(2){
    justify-content: flex-start;
    width: calc(100% - 80px);
  }
  .history_index h3 .small{
    display: block;
    margin-right: 10px;
    width: 288px;
    line-height: 1.3;
  }
  .history_index #history01 h3 .small{
    margin-right: 7px;
    width: 360px;
  }
  .history_index h3 .ttl_lines{
    display: none;
  }
  .history_index h3 span.ttl{
    width: 64%;
  }

  .contents .text_area{
    position: relative;
    padding: 32px 70px 32px 38px;
    margin-left: 32px;
    border-width: 0 0 0 4px;
    border-style: solid;
  }
  .contents .text_area p{
    font-size: 1.125rem;
    line-height: 1.6;
  }
  .contents .text_area .text_more p:not(.top0){
    margin-top: 15px;
  }

  /* event_box */
  .contents .event_box{
    padding: 24px;
    border-radius: 10px;
  }
  .contents .event_box h4{
    font-size: 1.125rem;
    font-weight: 700;
  }


  .contents .event_box .event_box_unit{
    display: inline-block;
    vertical-align: top;
    box-sizing: border-box;
    width: 48%;
    font-size: 0.875rem;
    text-align: left;
    line-height: 1.4;
  }
  .contents .event_box .event_box_unit:first-of-type{
    border-width: 0 1px 0 0;
    border-style: solid;
    padding-right: 10px;
  }
  .contents .event_box .event_box_unit:nth-of-type(2){
    padding-left: 20px;
  }

  .contents .event_box .event_box_unit .event_box_unit_text{
    margin: 0;
    font-size: 0.875rem;
  }

  .contents .event_box .event_box_unit dl:not(.top0){
    margin: 17px 0 0 0;
  }
  .contents .event_box .event_box_unit .event_box_unit_text:nth-of-type(n+2){
    margin: 10px 0 0 0;
  }
  .contents .event_box .event_box_unit dt{
    display: inline-block;
    vertical-align: top;
    font-weight: 700;
    width: 82px;
  }
  .contents .event_box .event_box_unit dd{
    display: inline-block;
    vertical-align: top;
    width: calc(100% - 86px);
  }


  .contents .history_table_box{
    display: flex;
    align-items: flex-start;
    justify-content: center;
  }
  .contents .history_table_box table{
    width: 50%;
    font-size: 0.875rem;
    text-align: left;
    line-height: 1.7;
  }
  .contents .history_table_box table:first-of-type{
    border-right: 1px solid;
  }
  .contents .history_table_box table:nth-of-type(2){
    margin-left: 23px;
  }
  .contents .history_table_box table tr{
    vertical-align: top;
  }
  .contents .history_table_box table tr th{
    padding: 17px 0 0 0;
    width: 85px;
    line-height: 1.4;
    font-weight: 700;
  }
  .contents .history_table_box table tr td{
    /* padding-top: 4px; */
    line-height: 1.4;
  }
  .contents .history_table_box table tr td.space{
    padding-top: 17px;
  }
  .contents .history_table_box table tr td.space_top{
    padding-top: 10px;
  }
  .contents .history_table_box table:first-of-type tr td{
    padding-right: 10px;
  }

  /* timeline_area */
  .tab_group{
    display: none;
  }
  .contents .timeline_ttl{
    display: flex;
    align-items: center;
    justify-content: flex-end;
    position: relative;
    right: 0;
    margin-bottom: 40px;
  }
  .contents .timeline_ttl .es{
    margin-right: 40px;
    width: 38.082vw;
    max-width: 460px;
  }
  .contents .timeline_ttl .jh{
    width: 28.067vw;
    max-width: 340px;
  }
  .contents .timeline_ttl .tab_contents_ttl{
    padding-bottom: 9px;
    font-size: 1.125rem;
    text-align: center;
    font-weight: 700;
    border-width: 0 0 3px 0;
    border-style: solid;
  }
  .contents .timeline_ttl .timeline_btn{
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
  }
  .contents .timeline_ttl .timeline_btn li{
    position: relative;
    padding: 8px 0;
    border: 1px solid #E8E8E8;
    border-radius: 16px;
    width: 8.9vw;
    max-width: 100px;
    height: 13px;
    font-size: 0.813rem;
    line-height: 1;
    text-align: center;
    color: #C0C0C0;
  }
  .contents .timeline_ttl .timeline_btn li.link_on{
    border: none;
    width: calc(8.9vw + 2px);
    max-width: 102px;
    height: 15px;
  }
  .contents .timeline_ttl .timeline_btn li a{
    display: inline-block;
    width: 100%;
    height: 100%;
  }
  .contents .timeline_ttl .timeline_btn li.link_on a{
    padding-left: 5px;
  }
  .contents .timeline_ttl .timeline_btn li.link_on:after{
    content: "";
    position: absolute;
    top: 50%;
    left: 14px;
    transform: translateY(-50%) rotate(45deg);
    width: 7px;
    height: 7px;
    border-top: 2px solid #fff;
    border-right: 2px solid #fff;
  }
  .contents .timeline_ttl .jh .timeline_btn li.link_on:last-of-type a{
    padding-left: 6px;
  }
  .contents .timeline_ttl .jh .timeline_btn li.link_on:last-of-type:after{
    left: 10px;
  }
  .contents .timeline_contents{
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    position: relative;
  }
  .contents .timeline_contents:before{
    content: "";
    position: absolute;
    top: 50%;
    left: -23px;
    width: calc(100% + 23px);
    height: 1px;
    z-index: -1;
  }
  .contents .timeline_contents:not(:first-of-type){
    margin-top: -23px;
  }
  .contents .timeline_contents .circle{
    position: absolute;
    top: 50%;
    left: -52px;
    transform: translateY(-50%);
    border-radius: 50%;
    width: 16px;
    height: 16px;
    border: 4px solid #fff;
    z-index: 1;
  }
  .contents .timeline_contents .circle.white{
    top: 50%;
    left: -56px;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
  }
  .contents .timeline_contents .circle.white:after{
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    width: 12px;
    height: 12px;
    background-color: #fff;
  }
  .contents .timeline_contents p{
    padding-top: 8px;
    width: calc(100% - 38.082vw - 28.067vw - 40px);
    max-width: 176px;
    min-width: 86px;
    font-size: 1.125rem;
    line-height: 1.2;
    font-weight: 700;
  }
  .contents .timeline_contents .tab_contents01{
    margin-right: 40px;
    width: 38.082vw;
    max-width: 460px;
  }
  .contents .timeline_contents .tab_contents02{
    width: 28.067vw;
    max-width: 340px;
  }

  .contents .timeline_contents .tab_contents_blank{
    height: 9.86vw;
    max-height: 122.34px;
  }

  .contents .timeline_contents .img_box{
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .contents .timeline_contents .img_box .book_wrapper{
    width: calc(8.9vw + 2px);
    max-width: 102px;
  }
  .contents .timeline_contents .img_box img{
    display: block;
    margin: 0 auto;
    height: 9.86vw;
    max-height: 122.34px;
  }
  .contents .timeline_contents .img_box img.book_wide_left{
    /* margin-left: -0.6vw; */
  }
  .contents .timeline_contents .img_box img.book_wide_right{
    /* margin-left: -0.7vw; */
  }

  /* history_note */
  .history_note{
    margin-top: 36px;
    background-color: #FAF6EB;
  }
  .history_note_wrapper{
    margin: 0 auto;
    padding: 40px;
    max-width: 960px;
  }
  .history_note_contents:not(:first-of-type){
    margin-top: 24px;
  }
  .history_note_contents .ttl{
    margin-bottom: 8px;
    font-weight: 700;
  }
  .history_note_contents p,
  .history_note_contents ul li,
  .history_note_contents a{
    font-size: 0.875rem;
    line-height: 1.7;
  }

  #history06.contents h3 span,
  #history07.contents h3 span{
    font-size: 1.125rem;
    line-height: 1.3;
  }
  #history06.contents h3 span.number,
  #history07.contents h3 span.number{
    font-size: 1.75rem;
  }
  #history01.contents .timeline_contents:nth-of-type(2),
  #history01.contents .timeline_contents:nth-of-type(4),
  #history01.contents .timeline_contents:nth-of-type(5),
  #history06.contents .timeline_contents:nth-of-type(2){
    margin-top: 24px;
  }
  #history08.contents .text_area:after{
    content: "";
    position: absolute;
    bottom: -16px;
    left: -10px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 20px 8px 0 8px;
    border-color: #F6C674 transparent transparent transparent;
  }

}@media screen and (min-width : 1210px){

  .contents .timeline_contents p{
    min-width: 136px;
  }


}@media screen and (max-width : 1112px) and (min-width : 601px){/* 見出し改行の調整 */
  .history_index h3 .ttl_lines{
  display: block;
  }
  .history_index h3 .small{
    width: 180px;
  }
  .history_index #history01 h3 .small{
    margin-right: 17px;
    width: 188px;
  }
  .history_index h3 span.ttl{
    width: 77%;
  }

}@media screen and (max-width : 1024px) and (min-width : 601px){
  .contents{
    padding-top: 68px;
    margin-top: -68px;
  }
  #history_link_area_fix .link_list li:not(.current) a:after{
    left: 106%;
  }
  #history_link_area .link_list li:not(.current) a:after{
    left: 106%;
  }

  /* textbook_history_link_area */
  .textbook_history_link_area{
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 auto;
    padding-top: 24px;
    width: 500px;
  }
  .textbook_history_link_area li a{
    display: flex;
    justify-content: flex-start;
    align-items: center;
  }
  .textbook_history_link_area li img{
    width: 50px;
    height: auto;
  }
  .textbook_history_link_area li .text{
    margin-left: 13px;
    font-size: 1.125rem;
  }
  .textbook_history_link_area li .sub_text{
    display: block;
    margin-bottom: 5px;
    font-size: 1rem;
    font-weight: 700;
  }

  .history_index h3 .small{
    margin-right: 0;
    /* width: 170px; */
  }
  /* .history_index #history01 h3 .small{
    margin-right: 30px;
  } */
  .history_index h3 span.ttl{
    width: 71%;
  }
  .contents .text_area{
    padding: 32px 50px 32px 20px;
  }
  .contents .timeline_ttl .es{
    margin-right: 26px;
  }
  .contents .timeline_ttl .timeline_btn li{
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px 0;
    border-radius: 26px;
    height: 26px;
  }
  .contents .timeline_ttl .timeline_btn li.link_on{
    height: 28px;
  }
  .contents .timeline_ttl .timeline_btn li a{
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .contents .timeline_ttl .timeline_btn li.link_on:after{
    left: 12%;
    width: 6px;
    height: 6px;
  }
  .contents .timeline_ttl .jh .timeline_btn li.link_on:last-of-type:after{
    left: 12%;
  }
  .contents .timeline_ttl .es .timeline_btn li.link_on:nth-of-type(2):after{
    left: 7%;
  }
  .contents .timeline_ttl .timeline_btn li.link_on a{
    padding-left: 9px;
  }
  .contents .timeline_contents .circle{
    left: -34px;
  }
  .contents .timeline_contents .circle.white{
    left: -38px;
  }
  .contents .timeline_contents .tab_contents01{
    margin-right: 26px;
    width: 38.082vw;
    max-width: 460px;
  }
  .contents .timeline_contents .tab_contents_blank{
    height: 10.91vw;
  }

  .contents .timeline_contents .img_box img{
    height: 10.91vw;
  }
  .contents .timeline_contents p{
    padding-top: 0;
    /*width: 13%;*/
    width: calc(100% - 38.082vw - 28.067vw - 26px);
    min-width: 66px;
    font-size: 1.8vw;
  }

  .history_index  #history05.contents h3{
    font-size: 1.125rem;
  }

}@media screen and (max-width : 850px) and (min-width : 601px){/* 見出し改行の調整 */
  #history07.contents h3 .pc_tb{
    display: none;
  }

}@media screen and (max-width : 770px){
  /* 見出し改行の調整 */
  .history_index h3 .small{
    font-size: 1rem;
    width: 170px;
  }
  #history06.contents h3 .small,
  #history07.contents h3 .small{
    font-size: 1rem;
  }
  .history_index h3 span.ttl{
    width: calc(100% - 170px);
    line-height: 1.3;
  }
  .history_index #history02.contents h3{
    font-size: 1.875rem;
  }
  #history06.contents h3 span, #history07.contents h3 span{
    font-size: 1.063rem;
  }


  /* 書影エリアの切り替え */
  /* tab */
  .tab_group {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    border-bottom: 3px solid;
    border-color: #EBC7B5;
    margin: 0 0 0 auto;
    width: 65vw;
  }
  .tab_btn {
    position: relative;
    top: 3px;
    width: 50%;
    border-radius: 8px 8px 0 0;
    border: 3px solid #EBC7B5;
    border-bottom: none;
    padding: 12px 0;
    background-color: #EBC7B5;
    text-align: center;
    list-style: none;
    cursor: pointer;
    font-size: 1.125rem;
    font-weight: 700;
  }
  .tab_btn.show{
    background-color: #fff !important;
  }
  .tab_btn01{
    margin: 0 18px;
  }
  .tab_btn02{
    margin-right: 18px;
  }
  .tab_btn:after{
    content: "";
    display: inline-block;
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%) rotate(135deg);
    width: 9px;
    height: 9px;
    border-top: 2px solid #fff;
    border-right: 2px solid #fff;
  }
  .tab_contents {
    display: none;
  }
  .tab_contents.show {
    display: inline-block;
  }
  .tab_contents_ttl{
    display: none;
  }


  /* timeline_area */
  .contents .timeline{
    /* margin-left: 23px; */
  }
  .contents .timeline_ttl{
    position: relative;
    margin: 0 0 26px auto;
    width: 65vw;
    text-align: right;
  }
  .contents .timeline_ttl .es{
    margin: 0 18px;
    width: 100%;
  }
  .contents .timeline_ttl .jh{
    margin: 0 70px;
    width: 100%;
    max-width: none;
  }
  .contents .timeline_ttl .timeline_btn{
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 26px;
  }
  .contents .timeline_ttl .timeline_btn li{
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border: 1px solid #DDDDDD;
    border-radius: 36px;
    width: 13vw;
    height: 34px;
    background-color: #fff;
    font-size: 0.938rem;
    line-height: 1.1;
    text-align: center;
    color: #C0C0C0;
  }
  .contents .timeline_ttl .timeline_btn li a{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
  }
  .contents .timeline_ttl .timeline_btn li.link_on{
    border: none;
    width: calc(13vw + 2px);
    height: 36px;
    filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.16));
    font-weight: 700;
  }
  .contents .timeline_ttl .timeline_btn li.link_on:after{
    content: "";
    position: absolute;
    top: 51%;
    left: 19%;
    transform: translateY(-50%) rotate(45deg);
    width: 8px;
    height: 8px;
    border-top: 2px solid #fff;
    border-right: 2px solid #fff;
  }
  .contents .timeline_ttl .es .timeline_btn li.link_on:nth-of-type(2):after{
    left: 8px;
  }
  .contents .timeline_ttl .timeline_btn li.link_on a{
    padding-left: 15px;
  }
  .contents .timeline_contents{
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    position: relative;
    margin-left: 24px;
  }
  .contents .timeline_contents:before{
    content: "";
    position: absolute;
    top: 50%;
    left: -10%;
    width: 110%;
    height: 1px;
    z-index: -1;
  }
  .contents .timeline_contents:not(:first-of-type){
    margin-top: -15px;
  }
  .contents .timeline_contents .circle{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: -57px;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    border: 4px solid #fff;
    z-index: 1;
  }
  .contents .timeline_contents .circle.white{
    top: 50%;
    left: -63px;
    transform: translateY(-50%);
    width: 26px;
    height: 26px;
  }
  .contents .timeline_contents .circle.white:after{
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    width: 10px;
    height: 10px;
    background-color: #fff;
  }
  .contents .timeline_contents .tab_contents01,
  .contents .timeline_contents .tab_contents02{
    margin-right: 0;
    width: auto;
    max-width: none;
  }
  .contents .timeline_contents .tab_contents_blank{
    height: 15.5vw;
  }

  .contents .timeline_contents p{
    margin-left: -27px;
    width: 89px;
    font-size: 1.063rem;
    line-height: 1.33;
    font-weight: 700;
  }
  .contents .timeline_contents .img_box{
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .contents .timeline_contents .img_box.es{
    margin-right: 18px;
    width: calc(65vw - 36px);
  }
  .contents .timeline_contents .img_box.jh{
    margin-right: 70px;
    width: calc(65vw - 140px);
  }
  .contents .timeline_contents .img_box .book_wrapper{
    width: calc(13vw + 2px);
    max-width: none;
  }
  .contents .timeline_contents .img_box img{
    height: 15.5vw;
  }
  #history01.contents .timeline_contents:nth-of-type(2),
  #history01.contents .timeline_contents:nth-of-type(4),
  #history01.contents .timeline_contents:nth-of-type(5),
  #history06.contents .timeline_contents:nth-of-type(2){
    margin-top: 14px;
  }


}@media screen and (max-width : 600px){


#history_link_area .link_list li a.sp_hidden{
  display: none;
}

  #history_link_area .link_list li a.sp_only{
  display: flex;
}



  /* mv */
  h2.mainImg{
    overflow: hidden;
    font-size: 0;
  }
  #main_box h2.main_box_mainImg{
    background-image: url("../../textbook_history/images/mainImg_sp.jpg");
  }

  /* textbook_history_link_area */
  .textbook_history_link_area{
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 auto;
    padding-top: 6.4vw;
    width: 92%;
  }
  .textbook_history_link_area li a{
    display: flex;
    justify-content: flex-start;
    align-items: center;
  }
  .textbook_history_link_area li img{
    width: 7.2vw;
    height: auto;
  }
  .textbook_history_link_area li .text{
    margin-left: 2vw;
    font-size: 3.47vw;
  }
  .textbook_history_link_area li .sub_text{
    display: block;
    margin-bottom: 1vw;
    font-size: 3.2vw;
    font-weight: 700;
  }

  /* #history_link_area_fix */
  #history_link_area_fix{
    display: none;
  }


  /* history_link_area */
  #history_link_area{
    position: relative;
    padding-top: 10.67vw;
  }
  #history_link_area .link_list li:not(.current) a:after{
    content: "";
    position: absolute;
    bottom: 53%;
    right: 10%;
    width: 2.27vw;
    height: 2.8vw;
    background-image: url(../../textbook_history/images/icon_anchor.png);
    background-repeat: no-repeat;
    background-size: contain;
  }
  /* #history_link_area.UpMove{
    width:100%;
  } */
  /* #history_link_area.DownMove{
    position: fixed;
    top: 1.5rem;
    padding: 0;
    width:100%;
    height: 60px;
    overflow: hidden;
    animation: DownAnime 0.5s forwards;
    background-color: #fff;
  } */
  @keyframes DownAnime{
    from {
      opacity: 0;
    transform: translateY(-100px);
    }
    to {
      opacity: 1;
    transform: translateY(0);
    }
  }

  .contents{
    padding-top: 40px;
    margin-top: -40px;
  }

  .history_index h3{
    margin-left: 0;
  }
  .history_index #history02.contents h3{
    font-size: 6.4vw;
  }
  .history_index h3 .number{
    position: absolute;
    left: 1.6%;
  }
  .history_index h3 .ttl_lines{
    display: none;
  }
  .history_index h3 .small{
    font-size: 3.73vw !important;
    width: auto;
  }
  .contents .text_area{
    position: relative;
    padding: 6.4vw 3.73vw 6.4vw 2.67vw;
    margin-left: 3.73vw;
    border-width: 0 0 0 4px;
    border-style: solid;
  }
  .contents .text_area p{
    font-size: 4.27vw;
    line-height: 1.5;
  }
  .contents .text_area .text_more p:not(.top0){
    margin-top: 5.33vw;
  }

  /* event_box */
  .contents .event_box{
    padding: 4.27vw;
    border-radius: 10px;
  }
  .contents .event_box h4{
    font-size: 4.27vw;
    font-weight: 700;
    margin: 0 0 4.27vw 0;
  }

  .contents .event_box .event_box_unit{
    font-size: 3.73vw;
    text-align: left;
    line-height: 1.4;
  }

  .contents .event_box .event_box_unit .event_box_unit_text{
    margin: 0;
    font-size: 3.73vw;
  }

  .contents .event_box .event_box_unit:nth-of-type(n+2),
  .contents .event_box .event_box_unit dl:nth-of-type(n+2),
  .contents .event_box .event_box_unit .event_box_unit_text:nth-of-type(n+2){
    margin: 2.67vw 0 0 0;
  }
  .contents .event_box .event_box_unit dt{
    display: inline-block;
    vertical-align: top;
    font-weight: 700;
    width: 28%;
  }
  .contents .event_box .event_box_unit dd{
    display: inline-block;
    vertical-align: top;
    width: 70%;
  }


  .contents .history_table_box table{
    width: 100%;
    font-size: 3.73vw;
    text-align: left;
    line-height: 1.7;
  }
  .contents .history_table_box table:first-of-type{
    margin-top: 4.27vw;
  }
  .contents .history_table_box table tr{
    vertical-align: baseline;
  }
  .contents .history_table_box table tr th{
    padding-right: 5.33vw;
    width: 28%;
    font-weight: 700;
  }
  .contents .history_table_box table tr td{
    line-height: 1.4;
  }
  .contents .history_table_box table tr td.space{
    padding: 2.67vw 0 0 0;
  }
  .contents .history_table_box table tr td.space_top{
    padding-top: 2.67vw;
  }
  .contents .history_table_box table tr td.space_top_sp{
    padding-top: 2.67vw;
  }


  /* tab */
  .tab_group{
    margin-left: 15vw;
    width: calc(74.87vw - 4px);
  }
  .tab_btn{
    padding: 3.2vw 0;
    font-size: 3.73vw;
    line-height: 1;
  }
  .tab_btn01{
    margin: 0 3vw;
  }
  .tab_btn02{
    margin-right: 3vw;
  }
  .tab_btn:after{
    width: 1.87vw;
    height: 1.87vw;
  }

  /* timeline_area */
  .contents .timeline{
    margin-left: 0.3vw;
    width: auto;
  }
  .contents .timeline_ttl{
    margin-bottom: 6.4vw;
    width: calc(74.87vw - 4px);
  }
  .contents .timeline_ttl .es{
    margin: 0 10px;
      width: calc(100% - 20px);
  }
  .contents .timeline_ttl .jh{
    margin: 0 8.6vw;
    width: calc(100% - 17.2vw);
  }
  .contents .timeline_ttl .timeline_btn{
    margin-top: 3.2vw;
  }
  .contents .timeline_ttl .timeline_btn li{
    width: 16.2vw;
    height: 9.6vw;
    font-size: 3.47vw;
  }
  .contents .timeline_ttl .timeline_btn li.link_on{
    width: calc(16.2vw + 2px);
    height: calc(9.6vw + 2px);
  }
  .contents .timeline_ttl .timeline_btn li.link_on:after{
    left: 2.1vw;
    width: 1.87vw;
    height: 1.87vw;
  }
  .contents .timeline_ttl .es .timeline_btn li.link_on:nth-of-type(2):after{
    left: 0.7vw;
  }
  .contents .timeline_ttl .timeline_btn li.link_on a{
    padding-left: 2vw;
  }
  .contents .timeline_contents{
    margin-left: 3.73vw;
  }
  .contents .timeline_contents:not(:first-of-type){
    margin-top: -2.5vw;
  }
  .contents .timeline_contents .circle{
    left: -11.2%;
    width: 2.67vw;
    height: 2.67vw;
  }
  .contents .timeline_contents .circle.white{
    left: -12.2%;
    width: 4.27vw;
    height: 4.27vw;
  }
  .contents .timeline_contents .circle.white:after{
    width: 1.6vw;
    height: 1.6vw;
  }
  .contents .timeline_contents p{
    margin-left: -4vw;
    width: 16vw;
    font-size: 3.2vw;
  }

  .contents .timeline_contents .tab_contents_blank{
    height: 19.8vw;
  }

  .contents .timeline_contents .img_box.es{
    margin-right: 10px;
    width: calc(74.87vw - 24px);
  }
  .contents .timeline_contents .img_box.jh{
    margin-right: 8.6vw;
    width: calc(57.67vw - 4px);
  }
  .contents .timeline_contents .img_box .book_wrapper{
    width: calc(16.2vw + 2px);
  }
  .contents .timeline_contents .img_box img{
    display: block;
    margin: 0 auto;
    height: 19.8vw;
  }
  #history01.contents .timeline_contents:nth-of-type(2),
  #history01.contents .timeline_contents:nth-of-type(4),
  #history01.contents .timeline_contents:nth-of-type(5),
  #history06.contents .timeline_contents:nth-of-type(2){
    margin-top: 4.27vw;
  }



  /* history_note */
  .history_note{
    margin-top: 9.6vw;
    background-color: #FAF6EB;
  }
  .history_note_wrapper{
    margin: 0 auto;
    padding: 6.4vw 3.73vw;
  }
  .history_note_contents:not(:first-of-type){
    margin-top: 5.4vw;
  }
  .history_note_contents .ttl{
    margin-bottom: 2.13vw;
    font-size: 4.27vw;
    font-weight: 700;
  }
  .history_note_contents p,
  .history_note_contents ul li,
  .history_note_contents a{
    font-size: 3.73vw;
    line-height: 1.7;
  }
  .history_note_contents ul li{
    position: relative;
    padding-left: 4vw;
  }
  .history_note_contents ul li:after{
    content: "";
    position: absolute;
    top: 1vw;
    left: -1vw;
    border: 1px solid #C6C4C1;
    border-radius: 50%;
    width: 3.73vw;
    height: 3.73vw;
    background-color: #fff;
  }
  .history_note_contents .library_link{
    display: block;
    margin-top: 2vw;
  }


  #history05.contents h3 span,
  #history06.contents h3 span,
  #history07.contents h3 span{
    font-size: 4.8vw;
    line-height: 1.3;
  }
  #history06.contents h3 .number,
  #history07.contents h3 .number{
    margin-left: 0;
  }
  #history05.contents h3 .number,
  #history06.contents h3 .number,
  #history07.contents h3 .number{
    font-size: 4.27vw;
  }
  #history05.contents h3 span.small,
  #history06.contents h3 span.small,
  #history07.contents h3 span.small{
    margin-bottom: 6px;
  }
  #history06.contents h3 span.ttl{
    display: block;
    position: relative;
    left: 5px;
    margin: 0 auto;
    width: 81%;
    text-align-last: center;
  }
  #history07.contents h3 span.ttl{
    display: block;
    position: relative;
    left: 12px;
    margin: 0 auto;
    width: 82%;
  }
  #history06.contents h3 .ttl_space{
    margin-left: 0.6vw;
  }
  #history07.contents h3 .ttl_space{
    margin-left: -2vw;
  }
  #history08.contents .text_area:after{
    content: "";
    position: absolute;
    bottom: -4.27vw;
    left: -2.67vw;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 5.33vw 2.13vw 0 2.13vw;
    border-color: #F6C674 transparent transparent transparent;
  }


  /*.floating_menu */
  #floating_menu.m_fixed {
    top: 1.9rem;
  }

  #floating_menu .sp_nvBtn{
    display: none;
  }
  #floating_menu .sp_nvBtn.current{
    display: block;
  }

  #floating_menu{
    position: fixed;
    width: 100%;
    z-index: 50;
    background: #fff;
    padding: 4.8vw 0 2.93vw;
    overflow: hidden;
    left: 0;
    top: -4rem;
    box-shadow: 0 2px 0 0 rgba(0, 0, 0, 0.16);
    transition: all 0.5s 0s ease;
  }
  #floating_menu .icon-wrap{
    position: absolute;
    top: 8vw;
    right: 4vw;
    transform: translatey(-50%);
    width: 8vw;
    height: 8vw;
    color: #C0C0C0;
  }

  .icon {
  position: relative;
  display: inline-block;
  width: 100%;
  height: 100%;
}
/* プラスアイコン */
/* ２本の線を.icon-wrapの中央に並行に重ねる */
.icon:before,
.icon:after {
  position: absolute;
  content: "";
  display: block;
  transition: all 0.4s;
  background: #C0C0C0;
  left: 50%;
  top: 50%;
  width: 50%;
  height: 2px;
  transform: translate(-50%, -50%);
}
/* そのうち1本を縦にする */
.icon:before {
  transform: translate(-50%, -50%) rotate(90deg);
}

/* プラスアイコンクリック後、マイナスにする */
.active .icon:before {
  transform: translate(-50%, -50%) rotate(0deg);
}
  #floating_menu .floating_list{
    margin: 0 auto;
    width: 99.5%;
    height: 0;
    display: none;
    transition: all 0.4s;
  }
  #floating_menu .floating_list.floating_list_nav{
    height: 8vw;
    display: block;
  }

  #floating_menu.active  .floating_list{
    height: 76vw;
    display: block;
  }
  #floating_menu.active  .floating_list.floating_list_nav{
    height: 0;
    display: none;
  }

  #floating_menu .floating_list li{
    position: relative;
    width: 50%;
    font-size: 3.47vw;
    line-height: 2;
    font-weight: 700;
  }
  #floating_menu .floating_list li a{
    display: flex;
    position: relative;
    width: 100%;
    height: 100%;
  }
  #floating_menu .floating_list li.current:first-of-type a{
    color: #CC9F85;
  }
  #floating_menu .floating_list li.current:nth-of-type(2) a{
    color: #D4B82F;
  }
  #floating_menu .floating_list li.current:nth-of-type(3) a{
    color: #88B81A;
  }
  #floating_menu .floating_list li.current:nth-of-type(4) a{
    color: #56B8AF;
  }
  #floating_menu .floating_list li.current:nth-of-type(5) a{
    color: #5D9EDE;
  }
  #floating_menu .floating_list li.current:nth-of-type(6) a{
    color: #AB91EB;
  }
  #floating_menu .floating_list li.current:nth-of-type(7) a{
    color: #EB86B1;
  }
  #floating_menu .floating_list li.current:nth-of-type(8) a{
    color: #EE9E00;
  }
  #floating_menu .floating_list li .number{
    position: relative;
    margin: 0 3.73vw 3.73vw 3.73vw;
    font-size: 3.73vw;
    line-height: 2;
    font-weight: 700;
    color: #fff;
  }
  #floating_menu .floating_list li.current:first-of-type .number{
    color: #CC9F85;
  }
  #floating_menu .floating_list li.current:nth-of-type(2) .number{
    color: #D4B82F;
  }
  #floating_menu .floating_list li.current:nth-of-type(3) .number{
    color: #88B81A;
  }
  #floating_menu .floating_list li.current:nth-of-type(4) .number{
    color: #56B8AF;
  }
  #floating_menu .floating_list li.current:nth-of-type(5) .number{
    color: #5D9EDE;
  }
  #floating_menu .floating_list li.current:nth-of-type(6) .number{
    color: #AB91EB;
  }
  #floating_menu .floating_list li.current:nth-of-type(7) .number{
    color: #EB86B1;
  }
  #floating_menu .floating_list li.current:nth-of-type(8) .number{
    color: #EE9E00;
  }
  #floating_menu .floating_list li .number:before{
    content: "";
    position: absolute;
    top: 0.1vw;
    left: -2.5vw;
    width: 6.4vw;
    height: 6.4vw;
    border-radius: 50%;
    z-index: -1;
  }
  #floating_menu .floating_list li:first-of-type .number:before{
    background-color: #CC9F85;
    border: 2px solid #CC9F85;
  }
  #floating_menu .floating_list li:nth-of-type(2) .number:before{
    border: 2px solid #D4B82F;
    background-color: #D4B82F;
  }
  #floating_menu .floating_list li:nth-of-type(3) .number:before{
    border: 2px solid #88B81A;
    background-color: #88B81A;
  }
  #floating_menu .floating_list li:nth-of-type(4) .number:before{
    border: 2px solid #56B8AF;
    background-color: #56B8AF;
  }
  #floating_menu .floating_list li:nth-of-type(5) .number:before{
    border: 2px solid #5D9EDE;
    background-color: #5D9EDE;
  }
  #floating_menu .floating_list li:nth-of-type(6) .number:before{
    border: 2px solid #AB91EB;
    background-color: #AB91EB;
  }
  #floating_menu .floating_list li:nth-of-type(7) .number:before{
    border: 2px solid #EB86B1;
    background-color: #EB86B1;
  }
  #floating_menu .floating_list li:nth-of-type(8) .number:before{
    border: 2px solid #EE9E00;
    background-color: #EE9E00;
  }
  #floating_menu .floating_list li.current .number:before{
    background-color: #fff;
  }
  #floating_menu .floating_list li:not(.current) a:after{
    content: "";
    position: absolute;
    bottom: 53%;
    right: 10%;
    width: 2.27vw;
    height: 2.8vw;
    background-image: url(../../textbook_history/images/icon_anchor.png);
    background-repeat: no-repeat;
    background-size: contain;
  }

}