html {height: 100%;}
body {
text-align: center;
margin: auto;
height: 100%;
background-color:#000000;
}
#wrapper{
 margin:auto;
    width:900px;
 	height:1000px;
 	background-color:#00FFFF;
 padding-top:20px;
 
    }
#header{
width:800px;
height:250px;
background-color:#FF0000;
margin-left:50px;
margin-bottom:20px;
}


#nav {
	width:115px;
	height:625px;
  	background-color:#00FF00;
	margin-left:50px;
    margin-right:20px;
    float:left;
    }
#container{
	width:665px;
	height:625px;
	background-color:#00FF00;
    float:left;
    margin-bottom:20px;  
	}
    #footer{
    width:800px;
    height:70px;
    background-color:#FFFF00;
    clear:both;
    margin-left:50px;
   
     }