#pdt_img{margin:auto;width:450px}#pdt_img #thumb{width:100%;margin-top:60px}a #thumb{margin:0}#pdt_img a{display:block}#thumb_bar{position:absolute;left:0;top:0}#thumb_bar img{width:70px;height:50px;float:left;margin-right:5px;margin-top:10px;background-size:contain;background-position:center center;background-repeat:no-repeat;cursor:pointer}