#main {
width: 705px; 
float:left;
margin: 0;
padding: 0px;
overflow:hidden;
}


#sidebar {
padding: 0;
margin: 0 0 0 715px;
}


#main-doscolumnas {
width: 500px; 
float:left;
margin: 0;
padding: 0px;
overflow:hidden;
}


#sidebar-doscolumnas {
padding: 9px 0px 0px 0px;
margin: 0px 0 0 500px;
font-size: 110.1%;
}