#guodu {
	width: 1920px;
	height: 1086px;
	position: absolute;
	left: 50%;
	z-index: 222;
	margin-left: -960px;
	background: url(../images/bg_di.png) no-repeat center bottom;
}

#sy {
	width: 1920px;
	height: 1080px;
	position: absolute;
	left: 50%;
	z-index: 222;
	margin-left: -960px;
	background: url(../images/sy.png) no-repeat center bottom;
}