html, body {
	margin: 0;
	padding: 0;	
}

body {
	font-family: Helvetica,Arial,sans-serif;
	font-size: 12px;
	line-height: 1.2;
	color: #000;
}	
	
#centered {
	position:absolute;
	top: 50%;
	left: 50%;
	width:30em;
	height:18em;
	margin-top: -9em; /*set to a negative number 1/2 of your height*/
	margin-left: -15em; /*set to a negative number 1/2 of your width*/
	background-color: transparent;
}

a:active
{
outline: none;
}

a:focus
{
-moz-outline-style: none;
}