.detail div {margin:0 auto;float:none;width:42%;height:492px;}
.download {width:200px;height:50px;background-color:#24eb6f;color:#fff;text-decoration:none;font-size:16px;font-weight:bold;line-height:50px;border-radius:5px;}
.download:hover {background-color:#22f170;color:#f18322;}