.content{
	width:1000px;
	height:477px;
	margin:0px auto;
	background:url('http://img.cement365.com/error/404.jpg') no-repeat;
}
.content button{
	width:139px;
	height:50px;
	border-radius: 8px;
	background: #4c99eb;
	color:#fff;
	border:none;
	position:relative;
	top:402px;
	left:40px;
	cursor: pointer;
	font-size: 18px;
	font-weight: bold;
	margin-right: 28px;
}