.smallpic { width:200px; cursor: pointer; position: fixed; bottom:20px; right:10px; }
.bigpic { background: url('../images2020/enter.jpg') center bottom; height: 140px; margin:0; padding: 0; overflow: hidden; position: fixed; bottom:0; left:0; right:0; z-index: 100; }
.bigpic .box { width:980px; margin:0 auto; background: blue; text-align: center; position: relative; }
.bigpic .box a img { width:220px; float:left; padding-top:16px; padding-right:50px; }
.tip_title { font-size:50px; color:#fff; float:left; line-height: 140px; margin:0 auto; padding:0 auto; }
.closebtn { position: absolute; right: 0; top: 5px; }
.closebtn img { width:50px; cursor: pointer; }
.hidden { display: none; }