.banner-box{height:400px;background: url(../img/video_banner.jpg)no-repeat center;}
.section-w{margin-top:70px;margin-bottom: 100px;}
.intro .title{text-align: center;color:#333;font-size:36px;}
.intro .slogan{text-align: center;color:#999;font-size:14px;}
.video-box{margin-top:70px;text-align: center;}
.video-box li{float:left;width:280px;height:280px;background: #fff;box-shadow: 0 0 20px #eee;margin:20px 10px;
transition:all 0.5s;}
.video-box li:hover{transform: translateY(-20px);}
.video-box .pic img{width:280px;height:155px;}
.video-box .txt-box{padding:20px;text-align: left;}
.video-box .txt-box p{color:#999;font-size:12px;font-weight: normal;}
.video-box .txt-box p.name{font-weight: normal;color:#333;font-size:16px;overflow: hidden;white-space: nowrap;text-overflow: ellipsis;}
.video-box .txt-box .play-btn{margin-top:10px;display: inline-block;padding:5px 15px 7px 7px;background: #40b6ff;color:#fff;
border-radius: 200px;}