.content_k{ max-width:1920px; min-width: 1200px; margin: 0 auto;}
.chch1{ margin:0 auto; height: 1506px;max-width:1920px; min-width: 1200px; background: url(/static/cms/drrkaa/dasai/checheng/images/01.png) no-repeat center top; } 
.chch2{ margin:0 auto; height: 1618px; max-width:1920px; min-width: 1200px;background: url(/static/cms/drrkaa/dasai/checheng/images/02.png) no-repeat center top; } 
.chch3{ margin:0 auto; height: 3135px;max-width:1920px; min-width: 1200px; background: url(/static/cms/drrkaa/dasai/checheng/images/03.png) no-repeat center top; } 
.chch4{ margin:0 auto; height: 3700px;max-width:1920px; min-width: 1200px; background: url(/static/cms/drrkaa/dasai/checheng/images/04.png) no-repeat center top; } 
.chch5{ margin:0 auto; height: 2662px;max-width:1920px; min-width: 1200px; background: url(/static/cms/drrkaa/dasai/checheng/images/05.png) no-repeat center top; } 
.chch6{ margin:0 auto; height: 2563px;max-width:1920px; min-width: 1200px; background: url(/static/cms/drrkaa/dasai/checheng/images/06.png) no-repeat center top; } 
.chch3{ position: relative; }
.chch3 a{ width: 260px; height: 66px; line-height: 66px; display: block; }
.chch3 a.baomingbiao{ position: absolute; bottom: 5px; left: calc(50% - 130px);}