I'm creating a fixed menu and I'm having a problem.
When I put the position fixed in the div of the menu the div that was below (content) "up", so part of the content is hidden in the menu div.
I think it's not correct I put margin-top in this content div.
Follow the example:
<!-- menu fixo !-->
<div style="position:fixed; width:100%; z-index:999; background-color:#000;top:0; left:0">
<p> Seja bem vindo </p>
</div>
<!-- conteudo !-->
<div>
<h1> Conteudo </h1>
</div>