body {background-color: #275D82;}

#container {
position: absolute; 
left: 50%;
text-align: left;
margin-left: -375px;
margin-top: 0px;
width: 750px;
background-color: #e6e6e6;
border-left: 5px solid black;
border-right: 5px solid black;
border-top: 5px solid black;
border-bottom: 50px solid black;
}