.l1 {
font-size:12px;   
float:left;
width:780px;
height:20px;
text-indent:5px;
}
.l2 {
clear:both;
float:left;
margin-left:2px;
margin-top:-20px;
width:780px;
height:20px;
background-image: url(../images/sfondo.gif);
}