.img_zoom{overflow:hidden;width:100%}.img_zoom a{position:relative;float:left}.img_zoom a span:before{color:#fff;content:"\f00e";font-family:FontAwesome;display:inline-block}.img_zoom a span{height:40px;font-size:24px;transition:color .15s ease 0s,background .15s ease 0s,opacity .15s ease 0s,border .15s ease 0s;position:absolute;text-align:center;top:30px;margin:-20px 0 0 -20px;border-radius:4px;background:rgba(0,0,0,.2) none repeat scroll 0 0;cursor:pointer;left:30px;width:40px;line-height:40px;display:none}