*{
	margin: 0;
	padding: 0;
}
#out{
	width:500px;
	height:140px;
	margin: 160px 350px;
}
#ser_box{
	width:500px;
	height:32px;
	border: 1px solid blue;
	text-align: center;
}
#ipt{
	width:480px;
	height: 26px;
	margin-top: 2px;
	border: 0;
	outline: 0;
	font-family: "微软雅黑";
	font-size: 16px;
}

#bot_box{
	width:500px;
	border: 1px solid #4C9ED9;
	border-top: none;
	display: none;
	}
	
#bot_box ul li{
		list-style: none;
		line-height: 25px;
		padding-left: 10px;
		}
#bot_box ul li:hover{
		background: #BCBCBC;
		}		
.s_btn {
	position:relative;
	left:300px;
	top:-31px;
    width: 100px;
    height: 36px;
    color: #fff;
    font-size: 15px;
    letter-spacing: 1px;
    background: #3385ff;
    border-bottom: 1px solid #2d78f4;
    outline: medium;
}
  
.sel{
	background:#BCBCBC;
}