section{
	width: 100%;
	height: 100%;
	/*overflow: hidden;*/
	background: url(/zt/dzkz/img/c-bg.jpg) no-repeat center 0;
	background-size:cover ;
}
section .middle{
	text-align: center;
	position: relative;
	
}
section .middle>img{
	z-index: 1;
}
section .middle .welcome{
	position: absolute;
	top:666px;
	left: 467px;
	z-index: 2;
}