buyrun hocam 

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>div yapısı</title>
<link rel="stylesheet" href="/css/stil.css">

</head>

<body>
  <div id="container">

      <header id="banner"  ></header>
      <nav> </nav>
      <section>
        <header id="makale">   </header>
        <article class="makale">   </article>
        <footer id="makalesonu">   </footer>

      </section>
      <aside>  </aside>
        <footer id="sitesonu"></footer>
  </div>



</body>
</html>

[B]@charset "utf-8"

#container{

    width: 960px;
    height: 720px;
    background: grey;
}

 [/B]