Something

body { 
background-color:#D3D3D3; 
text-align:center;
}
 

padding-left:10px;
}
 
.main_navigation {
color:red;
}


#topp {
background-color:#3580b9;
height:100px;
width:700px;
}
 
div.container  { 
width:700px; 
border:1px dotted #FFF; 
line-height:1.5em; 
margin:0 auto; 
text-align:left; 
}

.center { text-align:center; } 

.menu {
border:none; 
width:700px; 
padding:0;
height:500px;
position:absolute;
margin-left:-350px;
margin-top:-250px;
left:50%;
top:50%
;background-color:#fff;
}