Site-Navigation mit Listen, Beispiel 22a

Das Style-Sheet sieht so aus:

body {
   font-size: 15px;
   font-size: 15px;
   color: #000;
   background-color: #ffffff;
   padding: 0;
   border: none;
   margin: 0;
   }
#navigation {
   background-color: transparent;
   padding-left:0.3em;
   border-bottom: 2px solid #ffe;
   height: 3.5em;
   }
#navigation LI {
   background-color: transparent;
   padding: 0;
   margin: 0;
   list-style: none;
   display:inline;
   }
#navigation UL {
   background-color: transparent;
   padding: 0;
   margin: 0;
   }
#navigation A {
   font: normal 12px/25px sans-serif;
   color: #000;
   text-decoration: none;
   text-align: center;
   padding: 3px 0 0;
   margin: 25px 0 0 0px;
   width: 150px;
   height: 22px;
   display: block;
   float:left;
   }
#navigation A:link, #navigation A:visited {
   background: url(//graphics/op7back1.jpg) bottom center no-repeat;
   }
#navigation A:hover, #navigation A:focus {
   background: url(//graphics/op7back2.jpg) bottom center no-repeat;
   }
#maincontent {
   background-color: #ffe;
   padding: 1em;
   border-top: 2px solid #672647;
   margin: 0;
   }

Das HTML der Seite sieht so aus:

<html>
<head></head>
<body>
<div id="ia"><div id="navigation">
<ul>
<li><a class="ca" title="Grundlagen"
       href="/examples/listnav-22a.html">Grundlagen</a></li>
<li><a class="cb" title="Referenz"
       href="/examples/listnav-22b.html">Referenz</a></li>
<li><a class="cc" title="Tutorials"
       href="/examples/listnav-22c.html">Tutorials</a></li>
<li><a class="cd" title="Browsers"
       href="/examples/listnav-22d.html">Browsers</a></li>
</ul>
</div></div>
<div id="maincontent"></div>
</body>
</html>