/*   iframe
---------------------------------*/
.u-iframe-wrap { position: relative; width: 100%; }

.u-iframe-wrap::before { content: ''; display: block; padding-top: 56.25%; }

.u-iframe-wrap iframe { position: absolute; top: 0; right: 0; width: 100% !important; height: 100% !important; vertical-align: bottom; }

.gakkai2020 a { text-decoration: underline; }
.gakkai2020 img { max-width: 100%; }
.gakkai2020 p, .gakkai2020 ul, .gakkai2020 ol, .gakkai2020 dd { margin: 0; }
.gakkai2020 li { list-style-type: none; }
.gakkai2020 .ico_list { margin: 0; padding: 0; }
.gakkai2020 .ico_list a { padding-left: 20px; font-size: 12px; text-decoration: none; background: url(img/arrow03.gif) no-repeat center left; background-size: 10px auto; }
.gakkai2020 .ico_list li + li { margin-top: 5px; }
.gakkai2020 .tit_sub { margin: 25px 0; padding: 10px 10px 8px 10px; font-size: 130%; background: url(img/bg_tit_sub.gif) repeat-x bottom; border: 1px solid #d5d5d5; }
.gakkai2020 .tit_sub span { display: block; padding-left: 10px; border-left: 3px solid #d60326; }

.gakkai2020__kv { padding: 30px 10px; margin-bottom: 30px; background: url(img/kv_bg.jpg) no-repeat center; background-size: cover; }
.gakkai2020__kv h2 { margin: 0; background: none; }

.gakka2020__contents { padding: 0 10px; }
.gakka2020__contents .text { font-size: 14px; }
.gakka2020__contents .gakkai-sec { padding-bottom: 15px; }
.gakka2020__contents .gakkai-sec dl { display: flex; margin-bottom: 8px; }
.gakka2020__contents .gakkai-sec dt { flex: none; display: table; min-width: 60px; padding: 3px 0; margin-right: 15px; font-size: 11px; text-align: center; font-weight: bold; background: #EEEEEE; }
.gakka2020__contents .gakkai-sec dt.long { min-width: 110px; }
.gakka2020__contents .gakkai-sec dd { font-size: 14px; }
.gakka2020__contents .gakkai-sec dd > a { color: #313131; }
.gakka2020__contents .gakkai-sec + .gakkai-sec { padding-top: 20px; border-top: 1px solid #EEEEEE; }
.gakka2020__contents .gakkai-sec__title { padding: 5px; margin-bottom: 20px; text-align: center; font-size: 17px; line-height: 1.4; color: #fff; background: #3B536A; }
.gakka2020__contents .gakkai-sec__text { font-size: 14px; }
.gakka2020__contents .gakkai-sec__text > a { color: #313131; }
.gakka2020__contents .gakkai-sec__block { width: 100%; }
.gakka2020__contents .gakkai-sec__catch { margin-bottom: 5px; font-size: 16px; color: #D34643; font-weight: bold; }
.gakka2020__contents .gakkai-sec__note { margin-top: 5px; font-size: 12px; }
.gakka2020__contents .gakka-sec__broadcast { padding: 30px 0; text-align: center; }
.gakka2020__contents .gakka-sec__broadcast video { width: 100%; height: 56.4%; }
.gakka2020__contents .gakkai-sec__text--top { padding: 3px 15px; margin-bottom: 15px; font-size: 17px; text-align: center; color: #fff; background: #d86f6d; }
.gakka2020__contents .gakkai-sec__result-item { padding: 15px 0; border-bottom: 1px dotted #ccc; }
.gakka2020__contents .gakkai-sec__result-title { display: table; margin: 15px 0 0; padding: 3px 30px; color: #fff; letter-spacing: .2rem; background: #d86f6d; }
.gakka2020__contents .gakkai-sec__result-text { padding-left: 15px; border-left: 1px solid #ccc; }
.gakka2020__contents .gakkai-sec__endtext { margin-top: 15px; padding: 15px 15px; font-size: 14px; border: 1px solid #ccc; }
.gakka2020__contents .gakkai-sec .ico_list_lg li { background-position: center left; }
.gakka2020__contents .gakkai-sec .ico_list_lg a { font-size: 17px; }
.gakka2020__contents .gakkai-sec.-time dt {width: 110px; font-weight: normal;}
.gakka2020__contents .gakkai-sec.-time dd { font-weight: bold;}

.gakka2020__contents .sponsor { margin-top: 20px; border: 1px solid #CCCCCC; border-top: none; }
.gakka2020__contents .sponsor__title { margin-bottom: 15px; padding: 7px 15px 5px; font-size: 14px; background: #FFFFCC; border-top: 2px solid #D80026; border-bottom: 1px solid #CCCCCC; }
.gakka2020__contents .sponsor__list { display: flex; align-items: flex-end; flex-wrap: wrap; padding: 0 10px 15px; list-style: none; }
.gakka2020__contents .sponsor__item { width: 49%; margin-right: 2%; padding: 10px 0; border-bottom: 1px solid #CCCCCC; }
.gakka2020__contents .sponsor__item:nth-child(2n) { margin-right: 0; }
.gakka2020__contents .sponsor__link { display: block; padding: 0 0 0 20px; font-size: 11px; color: #313131; text-decoration: none; line-height: 1.5; background: url(img/arrow.png) no-repeat center left; }
.gakka2020__contents .detail { padding: 20px 15px 15px; margin-top: 30px; font-size: 14px; border: 3px solid #DDDDDD; }
.gakka2020__contents .detail dl { display: flex; margin: 5px 0; }
.gakka2020__contents .detail dt { flex: none; margin-right: 5px; }
.gakka2020__contents .detail__title { margin: 0 0 10px; font-size: 16px; color: #313131; }
.gakka2020__contents .gakkai__btn { margin-top: 20px; flex: 1; text-align: center; display: block; box-sizing: border-box;}
.gakka2020__contents .gakkai__btn a { display: inline-block; text-align: center; text-decoration: none; border: 2px solid #D34643; background-color: #D34643; color: #fff; font-weight: bold; font-size: 16px; width: 90%; box-sizing: border-box; max-width: 300px; padding: 15px; transition: opacity 0.1s; letter-spacing: 0.1em;}
.gakka2020__contents .gakkai__btn a:hover { opacity: 0.7;}
.gakka2020__contents .gakkai__btn .btn2 {color: #D34643; border: 2px solid #D34643; background-color: #fff; box-sizing: border-box;}
.gakka2020__contents .gakkai__btn2 { margin-bottom: 5px;  text-align: left; margin-top: 5px;}
.gakka2020__contents .gakkai__btn2 a::before { content: ""; display: inline-block; vertical-align: middle; width: 11px; height: 11px; margin-top: -2px; margin-right: 5px; background: url(../../../img/ico_arrow04.png) no-repeat center;}
.gakka2020__contents .gakkai__btn2 a {padding: 0 0 0 20px; text-decoration: none; padding: 3px 5px; box-sizing: border-box; width: 100%; max-width: 200px; display: inline-block; text-align: center; border: 1px solid #3B536A; color: #3B536A;}
.gakka2020__contents .gakkai__btn2 a:hover { opacity: 0.8;}