a:link {
    color: #cccccc;
    text-decoration: none;
}
a:visited {
    color: #cccccc;
    text-decoration: none;
}
a:hover {
    color: #cccccc;
    text-decoration: none;
}
a:active {
    color: #cccccc;
    text-decoration: none;
}


#guodu {
	width: 1920px;
	height: 1080px;
	position: absolute;
	left: 50%;
	z-index: 22;
	margin-left: -960px;
	background: url(../images/bg_di.png) no-repeat center bottom;
}

#sy {
	width: 1920px;
	height: 1080px;
	position: absolute;
	left: 50%;
	z-index: 21;
	margin-left: -960px;
	background: url(../images/sy.png) no-repeat center bottom;
}