I searched the web for solutions but none centered this horizontally on the page. I tried
margin-right: auto; and margin-left: auto; and tried margin 0 auto:
What's the solutions?
Thanks.

Code:
	.container10
	{
	border:1px solid #000000;
	background: #00FF00;
	padding:0px 0px 0px 0px;
	width:980px;
	height:264px;
	margin:0px 0px 0px 0px;
	}