body{
	/* the colour of the browser window */
	background-color: white;
}

.main {
	/* main div containing all content*/
	margin-left: auto;
	                                    
	margin-bottom: auto;
	                                    
	margin-right: auto;
	                                    
	margin-top: 30px;
	                                    
	background-color: #FFFFFF;
	height: 480px;
	width: 640px;
	border: 1px solid #000000;
}