codigo de ejemplo

<section>
<h1>Forest elephants </h1>
<section>
<h1>Introduction </h1>
<p>In this section, we discuss the lesser known forest elephants.
</section>
<section>
<h1>Habitat </h1>
<p>Forest elephants do not live in trees but among them.
</section>
<aside>
<p>advertising block
</aside>
</section>
<footer>
<p>(c) 2010 The Example company
</footer>

final del ejercicio obligatorio.