body{
    color:#000;
    background-color:#FFF;
    font:1em Verdana, sans-serif;
}
h1{
    color:#900;
    background:transparent url(esquina_encabezado.jpg) no-repeat;
    font:bold 160% Georgia, "Times New Roma", Times, serif;
    padding:25px;
    margin:0;
}
button{
    color:inherit;
    background:#EEE url(fondo_botones.jpg) bottom repeat-x;
    font-weight:bold;
    padding:1px 2px;
    width:100%;
    border:outset 1px #CCC;
}
button:active{border:inset 1px #CCC;}
code{font-size:130%;color:#900;background:transparent;}
p{margin:25px;}
div.seccion{
    float:left;
    width:50%;
    color:#000;
    background:transparent url(esquina_seccion.jpg) bottom right no-repeat;
}
#pie{clear:both;text-align:center;}
body>#pie{padding-top:20px;}
.clase_original{
    color:#900;
}
.clase_alternativa{
    color:#009;
    font-weight:normal;
    font-style:italic;
}