html body{margin: 0;background-color:#F8F8F8;}
.fl{float:left;} .fr{float: right;}
body{width:100%;height:100%;font-family: georgia,"微软雅黑";}
header{height:35px;width:100%;background-color:#222222;margin-top:-15px;}
header ul{list-style:none;margin-left:10px;color:#CCCCCC;line-height:35px; font-size:14px;}
header ul li{float:left;margin-right:25px;}
.item_list{position:absolute;top:70px;width:200px;left:10px;color:#fff;}
.item_list div{height:50px;line-height:50px;width:100%;margin-bottom:10px;text-align:center;cursor:pointer;border-radius:3px;}
.item_list div:nth-child(1){background-color:#6F5499;}
.item_list div:nth-child(2){background-color:#E74C3C;}
.item_list div:nth-child(3){background-color:#1FA67A;}
.item_list div:nth-child(4){background-color:#3498DB;}
.item_list div:nth-child(5){background-color:#0A64A4;}
.codeshow{position:absolute;top:70px;left:240px;/*border:1px solid red;*/min-height:400px;min-width:850px;}
.code{background-color:#272822;min-height:400px;width:570px;border:1px dashed #FFF;font-size:14px;}
.show{margin-left:10px;}