html, body {
  margin: 0;
  padding: 0;
  border: 0;
}
body { background-image: url(red090.jpg); /* change the color to your background color */ }
#main {
	width: 90%;
	max-width: 1000px;
	background-color:#fff;
	border: solid black medium;
	padding: 1em;
	margin-top: 2em;
	margin-right: auto;
	margin-bottom: 2em;
	margin-left: auto;
}