body{background:#e5e5e5;height:100%;}
.center{width:1200px;margin:0 auto;}

@media screen and (max-width:1200px){
	.center{width:90%;margin-top:10px;}
}
/*导航*/
.nav {
    width: 1200px;
    height: 40px;
    margin: 0 auto;
}
div .nav ul {
    width: 100%;
    background: url(/ciicdl/resource/cms/2019/03/img_pc_site/2019032911080831654.jpg) no-repeat;
}


/* index_mk1 */
#index_mk1 {
    width: 100%;
    position: absolute;
    top: 0;
}
.position {
    margin-bottom: 10px;
    height:480px;
    overflow:hidden;
}

.position.bd {
    height: 100%;
    height: 480px;
    overflow: hidden;
    z-index: 0;
    position: relative;
    margin-bottom: 10px;
}
.top{
    width:1200px;
}

div .nav ul li.firstli {
    width: 121px;
}

/* index_mk2 */
#index_mk2{
    width: 100%;
}


@media screen and (max-width:1200px){
	.top{width:100%;}
        .position{height: 0;}
        #index_mk2{margin-top:60px; }
}

#index_mk6{margin-bottom:80px;}

/* index_mk3456 */
#index_mk3,#index_mk5{
    float:left;
}
#index_mk4,#index_mk6{
    float:right;
}
@media screen and (max-width:1024px){

#index_mk3,#index_mk5,#index_mk4,#index_mk6{
    float:none;
}
#index_mk6{margin-bottom:40px;}
}
.divClear{
   overflow:inherit!important;
   clear:both;
}