.video-list {
    margin: 0 -10px;
}
.video-list .item {
    width: 33.33%;
    padding: 0 10px;
}
.video-list .item:nth-child(3n+1) {
    clear: left;
}
.video-list .box {
    margin: 0 auto 20px;
    max-width: 350px;
    border: 1px solid #80CAA5;
    background: #fff;
    position: relative;
}
.video-list .box .cover{
    font-size: 0;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index:30;
}
.video-list .box:hover {
    background: #F2FAF6;
}
.video-list .pic {
    position: relative;
    overflow: hidden;
}
.video-list .pic:before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.3);
    opacity: 0;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}
.video-list .box:hover .pic:before {
    opacity: 1;
}
.video-list .txt {
    padding: 10px 15px;
}
.video-list .name {
    color: #444;
    font-size: 15px;
    font-weight: bold;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    height: 24px;
}
.video-list .box:hover .name {
    color: #80CAA5;
}
.video-list .description{
    color: #8B8B8B;
    font-size: 13px;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 52px;
}
.video-header {
    display: table;
    width: 100%;
    table-layout: fixed;
    margin-bottom: 32px;
}
.video-header .title {
    display: table-cell;
    vertical-align: middle;
    padding-left: 15px;
    color: #444;
    font-size: 23px;
    font-weight: bold;
    margin: 0;
}
.video-detail {
    padding-bottom: 20px;
}
.video_box{
    background: #000;
    margin-bottom: 15px;
}
.video-detail .video{
    max-width: 800px;
    margin: auto;
    line-height: 0;
}
@media screen and (max-width: 1260px) {
    .video-list .item {
        width: 50%;
    }
    .video-list .item:nth-child(3n+1) {
        clear: none;
    }
    .video-list .item:nth-child(2n+1) {
        clear: left;
    }
}
@media screen and (max-width: 767px) {
    .video-list {
        margin: 0 -7px;
    }
    .video-list .item {
        padding: 0 7px;
    }
    .video-header,
    .video-header .title {
        display: block;
    }
    .video-header .title {
        padding: 0;
        text-align: center;
        font-size: 21px;
    }
}
@media screen and (max-width: 600px) {
    .video-list .item {
        width: 100%;
    }
    .video-list .item:nth-child(n) {
        clear: none;
    }
}