css2.css

/*External CSS*/

#one{
	left:0px; top:0px; width:100%; height:80px; z-index:1; background-color: green; position: absolute;
}
#two{
	left:0px; top:80px; width:150px; height:90%; z-index:2; background-color: blue; position: absolute;
}
#three{
	left:150px; top:80px; width:90%; height:90%; z-index:3; background-color: orange; position: absolute;
}
#four{
	left:150px; top:90%; width:90%; height:80px; z-index:4; background-color: red; position: absolute;
}