.body {
    height: 100%;
}

.content {
    display: grid;
    grid-template-columns: 3fr 1fr;
}

.content {
    height: 90vh;
    width: 80vw;
    margin: 0;
    background-color: rgba(255, 255, 255, 0.5);
}

/* 视频页内容 */
.content_video {
    width: 80vw;
    margin-top: 3vh;
    margin-left: 3vw;
    /* background-color: aliceblue; */
}


.content_video .learn_title {
    color: rgb(0, 0, 0);
    text-align: center;
    background-color: rgb(255, 255, 255, 0.5);
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

.content .learn_header {
    width: 60vw;
    height: 80vh;
    /* background-color: red; */
}

.learn_header .header_body {
    display: grid;
    grid-template-columns: 1fr 2fr;
}


.content .learn_header .tap {
    /* background-color: yellow; */
    list-style: none;
    display: flex;
    height: 6.5vh;
}

.learn_header .tap li {
    margin-left: 3vw;
    letter-spacing: 7px;
}


.header_body .img img {
    height: 5vh;
    width: 3vw;
    border-radius: 50%;
    margin-left: 3vw;
    margin-top: 10px;
}

.content .learn_comments {
    /* background-color: aqua; */
    line-height: calc(100%*6);
    height: 12vh;
}

.content .learn_comments div {
    height: 12vh;
    /* background-color: rgb(24, 62, 95); */
    text-align: center;
    line-height: 350%;
    letter-spacing: 50px;
    font-size: 20px;
}

.content .learn_comments input,
.content .learn_comments button {
    font-size: 4vh;
    border-radius: 50px;
    background-color: rgba(0, 0, 0, 0.5);
}

video {
    width: 60vw;
    /* border-radius: 10px; */
}


/* 菜单 */
.content .learn_body,
.learn_menu,
.learn_menu_body {
    height: 90vh;
}

.content .learn_body {
    /* background-color: aqua; */
background-color: rgba(0, 0, 0, 0.5);
    color: aliceblue;
    text-align: center;
}

.content .learn_menu {
    /* background-color: rgb(35, 233, 28); */
    list-style: none;
    text-decoration: none;
    line-height: 10vh;
}

.content .learn_menu h2 {

    padding-top: 2vh;
}

.learn_menu a {
    text-decoration: none;
    
}

.learn_comments {
    /* margin-left: 5vw; */
}

/* 评论区 */
.learb_foot {
    height: 100vh;
    background-color: bisque;
}