html{ background-color: #ffffff; } body{ width: 100%; background-color: #ffffff; } .win1200{ width: 1200px; margin: 0 auto; } .clear{clear:both} .clearFix:after{visibility:hidden;display:block;font-size:0;content:" ";clear:both;height:0;line-height:0;} .clearFix1{zoom:1}