body {
    background: rgb(252, 240, 174);
    margin: 0;
    font-family: serif;
}

/* ヘッダー */
header {
    height: 150px;
    width: 95%;
    background: rgb(255, 187, 99);
    border-radius: 20px;
    border: 3px solid rgb(102, 0, 116);
    margin: auto;
    margin-top: 10px;
    text-align: center;
}

header>h1>p {
    font-size: 45px;
    font-weight: bold;
}

/* ボタン */
.btn {
    padding-top: 20px;
    padding-bottom: 20px;
    text-align: center;
    border-bottom: 3px solid;
}

.btn>button {
    width: 150px;
    height: 50px;
    margin: 0 20px;
    /*ボタンを等間隔に配置*/
    font-size: 18px;
    border-radius: 10px;
    background-color: rgb(140, 213, 255);
    cursor: pointer;
}

.btn>button:hover {
    background-color: rgb(204, 236, 255);
}

#notbtn {
    background-color: rgb(204, 236, 255);
    cursor: initial;
}

/* 目次 */
.mokuji {
    width: 60%;
    margin: auto;
}

.mokuji>h1 {
    margin-left: 8%;
    font-size: 25px;
}

.mokuji>#table {
    width: 25%;
    margin-left: 8%;
    background-color: #fffcf4;
    border-radius: 15px;
    border: 2px solid rgb(255, 208, 0);
    list-style: none;
    margin-bottom: 70px;
}

.mokuji>#table>li {
    padding-top: 1%;
    padding-bottom: 1%;
}

.mokuji>#table>li>a {
    text-decoration: none;
    font-weight: bold;
    color: rgb(43, 43, 255);
}

.mokuji>#table>li>a:hover {
    color: rgb(255, 208, 0);
}

/* 本文 */
.detail {
    width: 70%;
    padding-bottom: 5%;
    background: #fff;
    margin: auto;
    border-radius: 30px;
    outline: 5px solid rgb(253, 221, 37);
    border: 5px solid rgb(207, 207, 207);
}

.detail>h1 {
    padding-top: 30px;
    padding-left: 1%;
    width: 94%;
    margin: auto;
    border-bottom: 3px solid rgb(255, 187, 99);
    border-radius: 5px;
}

.detail>h2 {
    margin-top: 3%;
    padding-left: 5%;
}

.detail>h3 {
    margin-top: 3%;
    padding-left: 6%;
}

/* 自己紹介 */
.detail>#myname{
    margin-top: 2%;
    margin-left: 8%;
    font-weight: bold;
}
.detail>.introduction {
    margin-top: 5%;
    margin-left: 8%;
    display: flex;
}

.detail>.introduction>div {
    width: 60%;
    padding-right: 2%;
}

.detail>.introduction>img {
    margin-top: 3%;
    width: 30%;
    height: 30%;
}

/* 趣味 */

/* ライブ */
.detail>.live {
    margin-top: 2%;
    margin-left: 8%;
    display: flex;
}

.detail>.live>div {
    width: 60%;
    padding-right: 2%;
}

.detail>.live>img {
    width: 27%;
    height: 27%;
}

span {
    font-weight: bold;
    color: rgb(255, 119, 119);
}

.detail>.lim,
.detail>.polka,
.detail>.beaver,
.detail>.hm,
.detail>.oral {
    margin-top: 2%;
    margin-left: 8%;
    display: flex;
}

.detail>.lim>div,
.detail>.polka>div,
.detail>.beaver>div,
.detail>.hm>div,
.detail>.oral>div {
    width: 55%;
    padding-right: 2%;
}

.detail>.lim>iframe,
.detail>.polka>iframe,
.detail>.beaver>iframe,
.detail>.hm>iframe,
.detail>.oral>iframe {
    margin-left: 5%;
    margin-right: 1%;
}

/* ページトップボタンスタイル */
#pagetop {
    text-align: center;
    font-size: 60px;
    color: yellow;
    -webkit-text-stroke: 1px black;
}

#page_top:hover {
    background: rgba(0, 0, 0, 0.8);
    color: rgb(255, 255, 255, 0.8);
}

#page_top {
    width: 50px;
    height: 50px;
    position: fixed;
    right: 10px;
    bottom: 10px;
    background: #0f0e0d;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    font-weight: bold;
    padding: 0.7em;
    transition: 0.3s0;
    opacity: 0.6;
    display: none;
    animation: late-open 0.5s ease-in 1s forwards;
}

#page_top::before {
    content: "TOP";
    font-size: 20px;
    color: rgb(255, 255, 255);
    position: absolute;
    width: 48px;
    height: 65px;
    top: 100;
    right: 0;
    left: 0;
    margin: auto;
    text-align: center;
}

/* フッター */
footer {
    margin-top: 100px;
    height: 150px;
    background: rgb(255, 208, 0);
    width: 100%;
    text-align: center;
}

footer>p {
    color: gray;
    padding-top: 50px;
}

.footer-menu {
    padding-left: 30px;
    padding-top: 5px;
    list-style: none;
}

.footer-menu>li {
    display: inline-block;
    margin-top: 10px;
    margin-left: 20px;
}

.footer-menu>li>a {
    text-decoration: none;
    color: #000;
    font-weight: 800;
    font-size: 18px;
}

.footer-menu>li>a:hover {
    opacity: 0.3;
}