body {
text-align:center;
font-family:verdana, arial, sanf-serif;
font-size:14px;
margin:0;
padding:0;
background-color:#00f;
}

#contenedor {
text-align:left;
width:650px;
margin:auto;
padding:30px 0 0 0;
}


#cuerpo_menu {
width:650px;
float:left;
}

#flashcontent {
text-align:center;
}
.cont_izq {
float:left;
width:325px;
text-align:center;
padding:20px 0 0 0;
}

.cont_der {
float:right;
width:325px;
text-align:right;
padding:20px 0 0 0;
}

img.sin_borde {
border:0;
}