SOURCE

		<div class="lazy">
			<div class="space">
					<img src="http://pms.anxx.com.cn/static/img/0911-01.844b69e.jpg" />
			</div>
	  	</div>
	  <style>
		*{
		margin:0;
		padding:0;
		}
		.lazy{
			position:fixed;
			top:0;
			right:0;
			bottom:0;
			left:0;
			background:rgba(0,0,0,.6);
			
		}
		.lazy .space{
			position:absolute;
			top:0;
			right:0;
			bottom:0;
			left:0;
			text-align:center;
			font-size:0;
		}
		.lazy .space:after,
		.lazy img{
			display:inline-block;
			vertical-align:middle;
		}
		.lazy .space:after{
			content:'';
			height:100%;
		}
		.lazy img{
			max-width:100%;
			max-height:100%;
		}
	  </style>

*{
		margin:0;
		padding:0;
		}
		.lazy{
		position:fixed;
		top:0;
		right:0;
		bottom:0;
		left:0;
		background:rgba(0,0,0,.6);
		text-align:center;
		font-size:0;
		}
		.lazy:after,
		.lazy .space{
			display:inline-block;
			vertical-align:middle;
		}
		.lazy:after{
			content:'';
			height:100%;
		}
		.lazy .space{
			max-height:92%;
			overflow:auto;
		}
		.lazy img{
			display:block;
			height:100%;
			margin:0 auto;
		}