body {
	margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px; 
}

.contenedor{
    width: 850px;
    margin: auto;
    color: bisque;
}

.contenedor .titulo{
    font-size: 3.5ex;
    font-weight: bold;
    margin-left: 10px;
    margin-bottom: 10px;
}

#pestanas {
    float: top;
}

#pestanas ul{
    margin-left: -40px;    
}

#pestanas li{
    list-style-type: none;
    float: left;
    text-align: center;
    padding: 0px 0px 0px 2px;
}

#pestanas a:link{
    text-decoration: none;
    color: bisque;
}

#contenidopestanas{
    clear: both;  
    width: 850px;
}