@media screen and (max-width:1199px) {
    .content_size {
        width: 95%;       
    }
    #top_date img {
        width: 90%;
        max-width: 717px;
    }



   
}
/*サイトマップ変更点*/
@media screen and (max-width:1190px) {
    #sitemap_open_btn {
        display: block;
    }
    footer .sitemap.open {
        display: block;
    }
    footer .sitemap {
        grid-template-columns: 1fr;
        gap: 0;
        width: 100%;
        margin-bottom: 30px;
        margin-top: 20px;
        display: none;
    }
    footer .content_size::after {
        display: none;
    }
    footer .footer_flex {
        flex-wrap: wrap;
    }
    .footer_flex>div {
        width: 100%;
    }
    .footer_flex>div:nth-child(1) {
        order: 2;
    }
    .footer_flex>div:nth-child(2) {
        order: 1;
    }
    footer .footer_flex > div:nth-child(2) {
        width: 100%;
    }
    
    footer .content_size {
        padding-top: 0;
    }
}

/*グローバルナビ削除サイズ*/
@media screen and (max-width:930px) {
    #gnavi {
        display: none;
    }
    #site_title {
        font-size: 20px;
    }
    #header {
        height: 50px;
    }
    #sub_menu .sub_menu_link_list {
        width:100%;
    }
}
/*グローバルナビ最小サイズ*/
@media screen and (max-width:720px) {
    #header {
        height: 60px;
    }
    #site_title {
        font-size: 18px;
        line-height: 1.2;
        margin-top: 10px;
    }
    br.sp_show {
        display: block;
    }
    #header .small_link {
        display: none;
    }
    .sub_menu_title {
        height: 100px;
        justify-content: flex-start;
    }
    .sub_menu_title span {
        font-size: 28px;
        padding-left: 20px;
    }
    #sub_menu .sub_menu_link_list {
        grid-template-columns: 1fr;
        gap: 0;
        margin-bottom: 30px;
    }
    #top_date {
        padding: 20px 0 30px 0;
    }
    #top_date > div {
        width: 90%;
    }
    #top_date .btn_group {
        flex-wrap: wrap;
    }
    #top_date a.btn01 {
        width: 100%;
        margin-bottom: 10px;
    }
    #top_contents {
        padding: 20px 0 30px 0;
    }
    .contents_list {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .contents_list ul li {
        margin-bottom: 16px;
    }
    #top_news {
        padding: 40px 0 0px 0;
        height: 460px;
    }
    #info_wrap {
        padding: 16px;
    }
    #info_wrap ul li {
        display: block;
    }
    #info_wrap ul li span.date {
        display: block;
    }
    #page_title h1 {
        font-size: 28px;
    }
    .sub_title01 {
        font-size: 22px;
    }
}
/*スマホサイズ　下層など*/
@media screen and (max-width:500px) {
    table.tb {
        box-sizing: border-box;
    }
    table.tb th,table.tb td{
        display: block;
        width: 100%;
        box-sizing: border-box;
    }
    table.tb td {
        border-top: none;
    }
    #contact_form .size1 {
        width: 90%;
    }
    /*学会長あいさつ*/
    .grheader {
        display: block;
    }
    .grheader > div:nth-child(1) {
        text-align: center;
        margin-right: 0;
    }
    .btn05 {
        width: 90%;
    }
}