body {
background-color:#fff;
color:#666666;
font-size:10px;
margin:0;

}

#contena {

width:900px;
height:615px;
margin-top:0px;
margin-right:auto;
margin-left:auto;



}
.footer {
color:#990000;
font-size:10px;
width:900px;
text-align:right;
margin-top:3px;
margin-right:auto;
margin-left:auto;

}