#mining1 { 
	width:500px;
	height:271px;
	position:absolute;
	background-image:url(../images/mining1.jpg);
	margin:0 auto;
	}	
	
#mining2 { 
	width:500px;
	height:271px;
	position:absolute;
	background-image:url(../images/mining2.jpg);
	margin:0 auto;
	}	
	
#mining3 { 
	width:500px;
	height:271px;
	position:absolute;
	background-image:url(../images/mining3.jpg);
	margin:0 auto;
	}