* {
    padding: 0;
    margin: 0;
}

body {
    height: 100vh;
    overflow: hidden;
}

.content {
    width: 100%;
    height: 100%;
    display: flex;
}

.but {
    text-align: center;
    margin-top: 100%;
    background-color:rgba(21, 23, 32, 1);
}

.content h1 {
    text-align: center;
    font-weight: 600;
    color: #fcfcfd;
    margin-top: 10px
}

.video {
    text-align: center;
    border: #6da6c3 2px solid;
    border-radius: 5px;
    margin-top: 50px;
    margin-bottom: 10px;
    height: 60%;
    width: 100%;
    background-color: #96b9cb;
}


/* 侧边栏区域 */
.content-left {
    width: 16%;
    height: 100%;
    background-color:rgba(21, 23, 32, 1);
    overflow-y: auto;
}

.content-left::-webkit-scrollbar {
    display: none;
}

.left-title {
    width: 100%;
    height: 50px;
    /* background-color: #263238; */
    background-color:rgba(21, 23, 32, 1);
    display: flex;
}

.left-title>a {
    display: block;
    width: 100%;
    height: 50px;
    line-height: 50px;
    padding-left: 17%;
    /* text-align: center; */
    color: white;
    font-size: 100%;
    text-decoration: none;
    font-weight: bold;
}

.left-title>a:hover {
    display: block;
    width: 100%;
    height: 50px;
    line-height: 50px;
    /* text-align: center; */
    padding-left: 17%;
    color: white;
    font-size: 100%;
    text-decoration: none;
    font-weight: bold;
}

.menu {
    display: block;
    width: 30%;
    cursor: pointer;
    background-color: #0275ff;
}

.menu i {
    display: flex;
    width: 50%;
    height: 2px;
    background: #ffffff;
    margin: 10px auto;
}


.seg {
    height: 1px;
    width: 100%;
    background-color: rgb(103, 101, 101);
}

/* .sidebar-menu {
    margin-top: 5px;
    display: flex;
} */

.sidebar-menu>div>a {
    text-align: center;
    display: block;
    line-height: 40px;
    color: white;
    cursor: pointer;
    text-decoration: none;
    font-weight: bold;
    padding: 5px;
    font-size: 100%;
}

.sidebar-menu>div>a:hover {
    display: block;
    line-height: 40px;
    color: white;
    cursor: pointer;
    text-decoration: none;
    font-weight: bold;
    padding: 5px;
    font-size: 100%;
    background-color: rgb(173, 171, 171);
}

.sidebar-menu>div>a>span {
    font-size: 16px;
}

.sub {
    list-style-type: none;
}

.sub>li {
    border-radius: 16px;
    margin: 10px;
}

.sub>li>a {
    border: #0493d9 solid 1px;
    border-radius: 14px;
    display: block;
    height: 100%;
    width: 100%;
    line-height: 30px;
    color: white;
    cursor: pointer;
    text-decoration: none;
    font-size: 10px;
    font-weight: bold;
    padding-left: 18px;
}

.sub>li>a:hover {
    display: block;
    height: 100%;
    width: 100%;
    line-height: 30px;
    color: #CCCCCC;
    padding-left: 18px;
    font-size: 10px;
    font-weight: bold;
    text-decoration: none;
    background-color: #174888;
}

.sub>li>a>span{
    font-size: 13px;
    font-weight: bold;
}

.sub>li>a>img {
    display: block;
    width:90%;
    height: 100%;
    padding: 0 0 10px 0;
}

/* 内容区域 */
.page {
    width: 100%;
    height: 100%;
    display: none;
}

.content-right {
    width:84%;
    height: 100%;
    background-color: skyblue;
    text-align: center;
    color: white;
}

.menus {
    display: none;
    width: 5%;
    border: 1px solid #aaa;
    border-radius: 3px;
    padding: 2px 0;
    margin: 5px;
    cursor: pointer;
    position: absolute;
}

.menus i {
    display: flex;
    width: 26px;
    height: 2px;
    background: #aaa;
    margin: 6px auto;
}

@media (max-width: 768px) {
    .content-left {
        display: none;
    }

    .content-right {
        width: 100%;
    }

    .menus {
        display: block;
    }

    .menus i {
        display: flex;
        width: 79%;
        height: 2px;
        background: #aaa;
        margin: 4px auto;
    }

}