.wrap {
	#display:table;
	vertical-align:middle;
	text-align:center;
}	
.content{
	/*position: flex;*/
	display: flex;
	justify-content:center; 
	align-items: center;
	height: 100%;
}
.banner{
	justify-content: center;
	align-items: center;
	width: 80%; 
	max-width: 80%; 
	height: auto;
}
.beian{
	/*position:absolute;*/
	width: 100%;
	#bottom:10px;
	text-align: center;
}