.video{
    width:1100px;
    min-width:1000px;
    margin:0 auto;
    margin-top:100px;
}
.video .title{
    height:50px;
    line-height:50px;
    font-size:28px;
    border-left:5px solid #47A2DC;
    padding-left:50px;
    background-color:#EDF2F8;
}
.video-box{
    display:flex;
    flex-wrap:wrap;
    justify-content: left;
    margin-top:30px;
}
.video-items{
    width:350px;
    height:280px;
    margin-bottom:25px;
    border:1px solid #e1e1e1;
}
.video-items:nth-of-type(3n+2){
    margin:0 25px;
}
.video-items .intro{
    margin-top:15px;
    font-size:14px;
    padding:0 12px;
    line-height:20px;
    text-align: justify;
    width:100%;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}
.video-items .my-video{
    width:100%;
    height:196px;
}
.video-items-info{
    height:100px;
    padding:12px;
}
.video-items-info .introduction{
    font-size:14px;
    line-height:20px;
    overflow:hidden;
    text-overflow:ellipsis;
    display:-webkit-box;
    -webkit-box-orient:vertical;
    -webkit-line-clamp:2;
}
.video-items-info .time{
    font-size:12px;
    color:#666;
    margin-top:6px;
}

/*始终保持在底部做法*/
html{height:100%;}
body{
    border-top:1px solid #e1e1e1;
    min-height:100%;
    height:auto;
    position:relative;
    padding-bottom:50px;
}
.public-bottom{
    position:absolute;
    bottom:0;
    left:0;
}

@media screen and (max-width:767px){
    .video{
        width:100%;
        min-width:100%;
        margin-top:60px;
    }
    .video-items{
        margin:0 auto 20px auto;
    }
    .video-items:nth-of-type(3n+2){
        margin:0 auto;
    }
}