@charset "utf-8";
body,html{ height:100%; margin:0; padding:0; text-align:center; overflow:hidden;}
.Bg{ height:100%; }
.Img{ height:100%; }
.WechatIcon{ position:absolute;  height:100px; width:100px; bottom:0; opacity:0; background:url(images/g02.png) left top no-repeat; background-size:cover}
.WechatIcon:hover{ background:url(images/g01.png) left top no-repeat; background-size:cover}