Hello,
I do not know much about javascript and needed help, I would like to make a menu that when clicked would change the display of a display div: none to display: block.
My menu
<div id="back">
<ul>
<li class="li1"><a href="#">O que é?</a></li>
<li><a href="#">Objetivo</a></li>
<li><a href="#">Pré-requisitos</a></li>
<li><a href="#">Público-alvo</a></li>
<li><a href="#">Metodologia</a></li>
<li><a href="#">Conteúdo</a></li>
<li><a href="#">Professores</a></li>
</ul>
</div>
test