body{
    background-color: #fff;}
.col{
    width: 100%;
    height: 480px;
	margin-left:0px;
    margin-top: 0px;
	margin-right:40px;
    margin-bottom: 60px;
    color: white;
    font-size: 28px;}
.col_window{
    height: 480px;
    cursor: pointer;
    position: relative;
    overflow: hidden;}
.col_con{
    position: absolute;
    left: 0;
    height: 480px;
    transition: left .4s ease;}
.col_con>img{
    float: left;}