header, footer, aside, nav, article {  
        display: block;  
    }  
      
    body {    
        /*width: 100%;
        height: 100%;  */
        font: 13px/22px Verdana, Helvetica, Arial, sans-serif;  
  		background: url("images/stock-market-price-ticker-display.jpg") no-repeat center center fixed; 
  			-webkit-background-size: cover;
 			-moz-background-size: cover;
  			-o-background-size: cover;
  			background-size: cover;
    }  
    header {
		background: #ffffff;
		color: #000000;
		margin: 0;
		padding: 0;
		width:800px;
    }
    #mainContent {  
        display: table-cell;
        /*display: inline-block;  */
        padding: 22px;
		background: #ffffff;
		width: 800px;  
		text-align: left;
		  position: absolute;
  z-index: 15;
  left: 50%;
  margin: 20px 0 0 -400px;
    } 
        footer {
	color: #000000;
	text-align: right;
	width: 100%;
    }