html, body {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
	background-color: #999;
	font-size: 22px;
	font-family: helvetica, arial, sans-serif;
}

.mainpart {
	max-width: 960px;
	min-width: 800px;
	padding: 0 40px;
}