body 
{
margin: 0; 
padding: 0;   
background-image: url(images/fondo.jpg)
}
    

   #retorn
{
margin-left: 70px;
margin-top: 30px;

}


    #onsom
{
margin-left: 70px;
margin-top: 30px;

}


   #obra
{
margin-left: 108px;
margin-top: 50px;
}

   #listamenu
{
padding-left: 0px;
margin-left: 25px;
margin-top: 170px;
background-color: white;
width: 150px;
z-index:1
}



   #nucleo
{
position: absolute;
padding-left: 0px;
margin-left: 420px;
margin-top: -383px;
}

   #cabecera
{
position: absolute;
padding-left: 0px;
margin-left: 38px;
margin-top: -380px;
}




#listamenu a:hover 
{
color: red;
font-weight: bold;
}




   #listamenu li
{
list-style: none;
margin: 0;
padding: 6px;


}

   #listamenu li a
{
text-decoration: none;
font-size: 13px;
font-family: verdana;
font-weight: bold;

}

   ul#listamenu li a 
{ 
color: #333333;
padding-left: 10px;
}


.retorn{
color:red;
}
 
  
     #centro
{
position: relative;
background: white;
left: 60px;
top:50px;
width: 873px;
height: 500px;
z-index:2
}

#expoactual{
margin-top: 0px;
margin-left: 65px;

}
 

.artistas{
font-size: 13px;
font-weight:bold;
color: red;
font-family:verdana;
margin-left: 30px;
color: red;

}