#margen{
width:495px;
height:630px;
margin-top:150px;
/*background-color:yellow;*/
}

#boton_entrar{
position:relative;
width:224px;
height:200px;
margin:auto;
text-align:center;
padding-top:260px;
background: url(logo_intro.jpg) no-repeat;
/*background-color:#00FF00;*/
}

A.entrar, A.entrar:VISITED, A.entrar:ACTIVE, A.entrar:FOCUS, A.entrar:LINK{
font: 12pt Verdana, Helvetica, sans-serif;
color:#aaa;
text-transform:lowercase;
text-decoration:none;
font-weight:900;
/*background-color:#00FF00;*/
}

A.entrar:HOVER{
font: 12pt Verdana, Helvetica, sans-serif;
color:#888;
text-transform:lowercase;
text-decoration:none;
font-weight:900;
}

#pie_index{
position:relative;
float:left;
width:810px;
height:55px;
/*background-color:lime;*/
background: url(fondoabajoindex.jpg) no-repeat;
}