.content_k{ max-width:1920px; min-width: 1200px; margin: 0 auto;}
.zc1{ margin:0 auto; height: 2654px;max-width:1920px; min-width: 1200px; background: url(/static/cms/drrkaa/dasai/zuocang/images/01.png) no-repeat center top; } 
.zc2{ margin:0 auto; height: 2542px; max-width:1920px; min-width: 1200px;background: url(/static/cms/drrkaa/dasai/zuocang/images/02.png) no-repeat center top; } 
.zc3{ margin:0 auto; height: 1125px;max-width:1920px; min-width: 1200px; background: url(/static/cms/drrkaa/dasai/zuocang/images/03.png) no-repeat center top; } 
.zc3 a{ width: 260px; height: 66px; line-height: 66px; display: block; }
.zc3 a.baomingbiao{ position: absolute; bottom: 5px; left: calc(50% - 130px);}