html { 
	background: url(100.jpg) no-repeat center center fixed; 
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
	font-size: 200px;
	color: #ffffff;
	font-family: Tahoma, Geneva, sans-serif;
	
}