body {
			width: 960px;
			margin: 2em auto;
			font-family: Arial, sans-serif;
			font-size: 16px;
			line-height: 1.4;
		}

		h1 {
			font-size: 2em;
			font-weight: normal;
			margin: 0 0 1rem 0;
		}
		section {
			padding: 2rem;
			border: 1px solid #ccc;
			margin: 4rem 0;
			background-color: #fff;
		}

		aside {
			font-size: 24px;
			font-family: Georgia, Serif;
			font-style: italic;
			background-color: #aaa;
			color: #fff;
			padding: 1.5rem;
			width: 15rem;
		}
		.floatr{
			float:right;
		}
		#section2{
			position:relative;
		}
		.lowright{
			position:absolute;
    		bottom:0;
    		right:0;
		}
		#section3{

		}
		.greenRightCornNoscroll{
			color:green;
			position:fixed;
   			top:0;
   			right:0;
		}
		#section4{
			position:relative;
		}
		#section4*{
			
		}
		.red{
			width:300px;
			height:200px;
			top:50%;
			left:50%;
			margin-top: -100px;
  			margin-left: -150px;
			position:absolute;
			
			z-index: 1;
			/*display: inline-block;
			margin-left: 0;
*/
			background-color: red;
		}
		.black{
				width:300px;
			height:200px;
			top:50%;
			left:50%;
			margin-top: -90px;
  			margin-left: -140px;
			/*margin-left: 10px;
			display: inline-block;*/
			position:absolute;
			z-index: 0;
			background-color: black;
		}