header{background: #F3F1EE;height: 110px;}
.top_logo{height: 110px;}
.opera_nav{margin-left:40px;}
.opera_nav li{float: left;margin-left: 100px;height: 110px;cursor: pointer;overflow: hidden;}
.opera_nav li a{margin-top: 20px;}
.opera1{display: inline-block;width: 38px;height: 70px;background: url(../images/index/1.png) 100% 100%;}
.opera1:hover{background: url(../images/index/11.png)}
.opera2{display: inline-block;width: 38px;height: 70px;background: url(../images/index/2.png) 100% 100%;}
.opera2:hover{background: url(../images/index/12.png)}
.opera3{display: inline-block;width: 38px;height: 70px;background: url(../images/index/3.png) 100% 100%;}
.opera3:hover{background: url(../images/index/13.png)}
.opera4{display: inline-block;width: 38px;height: 70px;background: url(../images/index/4.png) 100% 100%;}
.opera4:hover{background: url(../images/index/14.png)}
.opera5{display: inline-block;width: 38px;height: 70px;background: url(../images/index/5.png) 100% 100%;}
.opera5:hover{background: url(../images/index/15.png)}
.opera6{display: inline-block;width: 38px;height: 70px;background: url(../images/index/6.png) 100% 100%;}
.opera6:hover{background: url(../images/index/16.png)}
.opera7{display: inline-block;width: 38px;height: 70px;background: url(../images/index/7.png) 100% 100%;}
.opera7:hover{background: url(../images/index/17.png)}
.opera8{display: inline-block;width: 38px;height: 70px;background: url(../images/index/8.png) 100% 100%;}
.opera8:hover{background: url(../images/index/18.png)}
.opera-this .opera1{background: url(../images/index/11.png)}
.opera-this .opera2{background: url(../images/index/12.png)}
.opera-this .opera3{background: url(../images/index/13.png)}
.opera-this .opera4{background: url(../images/index/14.png)}
.opera-this .opera5{background: url(../images/index/15.png)}
.opera-this .opera6{background: url(../images/index/16.png)}
.opera-this .opera7{background: url(../images/index/17.png)}
.opera-this .opera8{background: url(../images/index/18.png)}