.zy-Slide{ position:relative; width: 940px; height: 253px;margin:0 auto;}
.zy-Slide ul{
    position:relative;
    width:785px;
    height:253px;
    margin:0 auto;
}
.zy-Slide li{
    position:absolute;
    list-style:none;
    background:#fff;
    width:0;
    height:0;
    top:146px;
    left:377px;
    z-index:0;
    cursor:pointer;
    border-radius:3px;
    margin:0;
    padding:0;
}
.zy-Slide li img{
    width:100%;
    height:100%;
    border:5px #fff solid;
    vertical-align:middle;
}
.zy-Slide section:nth-child(1), .zy-Slide section:nth-child(2){ position: absolute; top: 50%; margin-top: -19px; cursor: pointer;width:38px; height: 38px; transition: 0.4s all}
.zy-Slide section:nth-child(1){ left: 0; background:url(../images/btlf.png) no-repeat;}
.zy-Slide section:nth-child(1):hover{ background:url(../images/btlfh.png) no-repeat;}
.zy-Slide section:nth-child(2){ right: 0; background:url(../images/btrt.png) no-repeat;}
.zy-Slide section:nth-child(2):hover{ background:url(../images/btrth.png) no-repeat;}