.weixin-tip{display: none; position: fixed; left:0; top:0; bottom:0; background: rgba(0,0,0,0.8); filter:alpha(opacity=80); height: 100%; width: 100%; z-index: 100;}
.weixin-tip p{text-align: center; margin-top: 10%; padding:0 5%;}
.weixin-text{font-size: 20px;display: inline-block; color:#FFF;position:fixed;top:50%;left: 10%; }