.clearfix{display:block;clear:both;float:none;}




.video-back{
    display:block;
    padding:200px 0px;
    text-align:center;
    /*background-image:url("../../audio/wt.gif");*/
    /*background-repeat: no-repeat;*/
    /*background-size: cover;*/

}
.gif-tu{
    height:82vh;
    background-image:url("../../audio/wt.gif");
    background-repeat: no-repeat;
    background-size: 100%  100%;
}

.video-back h1{display:block;text-align:center;color:#fff;font-size:50px;}
.video-back p{display:block;color:#fff;margin:0px;padding:0px;margin-bottom:20px;}
.video-back img{width:150px;}

.main-heading{text-align: center;margin: 50px auto;font-size: 70px;}
.main-para{margin: 10px 100px;text-align: center; font-size: 20px;}
.jq22-demo a{ color: aliceblue; font-family: "微软雅黑"; font-size: 20px; text-decoration: none; padding-left: 10px; padding-right: 10px; font-weight: bold;text-shadow:2px 2px 4px #000; }