.float{ width:50px; border-radius:5px 0 0 5px; position:fixed; right:0; top:45%; z-index:1000;}

.float a{ width:50px; height:50px; position:relative;}

.float a.n1 .it{ width:200px; height:50px; line-height:50px; text-indent:50px; color:#fff; border-radius:5px 0 0 0; background:#ffbe33 url(../images/img71.png) no-repeat 7% center; position:absolute; left:0; top:0; z-index:1;}

.float a.n2 .it{ width:200px; height:50px; line-height:50px; text-indent:50px; color:#fff; background:#68a5e1 url(../images/img72.png) no-repeat 7% center; position:absolute; left:0; top:0; z-index:1;}

.float a.n3{ background:#42ae3c url(../images/img73.png) no-repeat center;}

.float a.n3 .img{ display:none; position:absolute; left:-160px; top:-50px; z-index:1; padding:5px 7px 5px 5px;}

.float a.n3 .img img{ width:140px; height:140px; background:#fff; padding:5px;}

.float a.n4{ border-radius:0 0 0 5px; background:#555555 url(../images/img74.png) no-repeat center;}
.dis{ display:block; zoom:1;}
.fz20{ font-size:20px; color:#333;}