body {
	font-size: 12px;
	font-family: arial, helvetica, sans-serif;
	color: #333;
}

p {
	margin: 1em;
}

.content {
	background-color: #e3e3e3;
	border-top: 1px solid #ccc;
	border-bottom: 1px solid #ccc;
	padding: 2px;
	height:33em;
}

.foot {
  text-align: center;
}

#centerdiv {
	position:absolute;
	top: 50%;
	left: 50%;
	width:60em;
	height:40em;
	margin-top: -20em; /*set to a negative number 1/2 of your height*/
	margin-left: -30em; /*set to a negative number 1/2 of your width*/
	border: 1px solid #ccc;
	background-color: #f3f3f3;
}