Code:
body {

	margin: 0;

	font-family: verdana, arial, helvetica, sans-serif;

	font-size: 62.5%;

	color: #000000;
	/*background-color: #CC9999;*/
                background-color: transparent;
	background-image: url("../images/your_image.jpg");
	background-repeat: 
	no-repeat;
	background-position: 
                center; 
	}
Try above