*{ margin:0; padding:0;}
.box{ height:102px; position:relative;}
.left_btn,.right_btn{ width:30px; height:100px; float:left;border:#CCC 1px solid; cursor:pointer; text-align:center; line-height:100px;}
.ct_bg{ width:430px; height:100px; border:#CCC 1px solid; float:left; margin:0 10px; overflow:hidden; position:relative;}
.ct{ width:1000px; height:100px; overflow:hidden;position:relative; left:0;}
.ct div{ width:100px; height:100px; background:#ececec; float:left; text-align:center; line-height:100px; margin-right:10px;}