body{/*font-family: 'SimHei'*/}
.am-container{background: transparent}
.banner{height: 547px;max-width: 1920px;min-width: 1200px;background:url(../../images/banner.jpg) no-repeat center;margin: 80px auto 0 auto}
.nav{
    z-index: 999;left: 0;top:0;background:  no-repeat center;height: 80px;line-height: 80px;width: 100%;min-width: 1200px;margin: 0 auto;background: #f0f0f0;position: fixed;left: 0;top: 0;;
}
.nav li{cursor: pointer;font-size: 19px;;height: 60px;line-height: 60px;float: left;text-align: center;margin:0 5px;text-align: center;position: relative}
.nav li a.first-a{color: black;padding:0 20px;display: block;height: 80px;line-height: 80px;position: relative;}
.nav li  .sub-nav{line-height: 30px;position: absolute;left: 50%;transform: translateX(-50%);top: 50px}
.sub-nav{display: none}
.sub-nav a{font-size: 18px}
.sub-a{background: #d5eaf4}
.sub-a a{display: block}
.nav li a.active{color: red}
.nav li:hover .first-a{color: red}
.nav li:hover .sub-nav{display: block}
.sub-nav a:hover{background: url(../../images/sub-nav.png) no-repeat center center;color: red}
.content{max-width: 1920px;min-width: 1200px;margin: 0 auto;background: no-repeat center top}



.marquee{width:800px;height:230px;overflow:hidden; margin:0 auto;visibility: hidden;position: absolute;left: 0;top: 0;bottom: 0;right: 0}
.marquee ul li{float:left; padding:0 5px;height: 230px}
.marquee ul li img{display:block;background: none;padding-top: 25px}
.click-item{width: 400px;height: 300px;cursor: pointer;position: absolute;left: 700px;top: 0px;}

@keyframes myfirst
{
    from {left: 0;}
    to {left:100%;}
}
/*--------------------------媒体查询---------------------------------*/
@media screen and (max-width:319px){

}
@media screen and (min-width:320px) and (max-width:479px){


}
@media screen and (min-width:480px) and (max-width:539px){


}
@media screen and (min-width:540px) and (max-width:639px){


}
@media screen and (min-width:640px) and (max-width:719px){


}
@media screen and (min-width:720px) and (max-width:1079px){

}
@media screen and (min-width:1080px) and (max-width:1439px){

}
@media screen and (min-width:1440px) {

   }