html{overflow:auto;}    
body{
height:100%;
width:100%;	
margin:0;
}
.tb{
	height:400px;
	width:100%;
	background:url(../images/welcome.jpg) no-repeat center;
	}
.wel_title{
	padding:40px 20px 0px 10px;
	font-size:16px;
	color:#0E6BAD;
	font-weight:bold;
	text-align:center;
	}
.wel_title2{
	padding-left:40;
	font-size:12px;
	color:#0E6BAD;
	font-weight:bold;
	}
.wel_text{
	padding: 0px 50px 0px 50px;
	line-height:24px;
	font-size:12px;
	color:#2D5D7B;
	}