#corpo {
text-align:left;
position:relative; 
border:1px solid #000066;
margin-bottom: 12px;
width: 100%;
}

/**************************

#corpo-colonna1 {
left: 0px;
position:absolute; 
width:20px; 
height: 100%;
background-color:#000066;
}
*/
/***************************/

#corpo-colonna1 {
margin:0 300px 0 0px; 
border-right:1px dotted #000066; 
background:#fff;
padding: 6px; 
}

hr { display:none }

/***************************/

#corpo-colonna2 {
position:absolute; 
top:0; right:0; 
width:300px; 
padding:6px;
height:100%;
display: block; 
}