body {
    margin: 0;
    font-family: "メイリオ", "Meiryo", "游ゴシック", YuGothic, "ヒラギノ角ゴ Pro", "Hiragino Kaku Gothic Pro", sans-serif;
}
.contentsDiv {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    box-sizing: border-box;
    padding-left: 20px;
    padding-right: 20px;
}
.contentsDiv-pTxt {
    padding-left: 60px;
    padding-right: 60px;
}
.contentsShortWid {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.contentsFlexCenter {
    display: flex;
    justify-content: center;
}
.contentSec {
    padding-top: 30px;
    padding-bottom: 30px;
}
.sectionWrapper {
    padding: 30px 0;
}
.secBg-gray {
    background-color: #eee;
}
.bg_beige {
    background-color: #FFF7DC;
}
.bg_black {
    background-color: #121212;
}
.youtube {
    width: 60%; /* 横幅変更 */
    padding: 0;
    margin: 0 auto;
    box-sizing: border-box;
}
.youtube .inner {
    padding-top: 56.25%;
    position: relative;
    height: 0;
    overflow: hidden;
}
.youtube .inner iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
@media screen and (max-width: 640px) {
    .youtube {
            width: 90%; /* 横幅変更 */
    }
}
@media screen and (max-width: 767px) {
    .contentSec {
        padding-top: 20px;
        padding-bottom: 20px;
    }
    .sectionWrapper {
        padding: 20px 0;
    }
    .contentsDiv-pTxt {
        padding-left: 30px;
        padding-right: 30px;
    }
}