Im CSS-File mehrere Klassen in einer Style-Angabe?

.untermenu { 
           width: 998px; 
           height: 40px;
           margin: 0px; 
           padding: 0px;
           }
           .untermenu ul {
             margin: 0;
             padding: 0;  
             }
           .untermenu ul li {
             display: inline;
             font-size: 13pt;
             list-style-type: none; 
             margin: 0 0 0 10px;
             padding: 0;
             } 
            .untermenu ul li a, .untermenu ul li a:visited { 
              text-decoration: none;
              color: #FFF;
              border-left: 4px solid #FFCC00;
              padding-left: 5px;
              }
            .untermenu ul li a:hover, .untermenu ul li a:active {
              text-decoration: none;
              color: #FFF;
              }              
            .untermenu.current-post a, .current-post, .current-post a {
              text-decoration: none;
              color: #FFCC00;
              font-weight: bold;
              }  

<div class="untermenu">
        <ul> 
              <li class="current-post"><a href="http://www.url.de/?p=19&cat=9" rel="bookmark" title="MEDIA">MEDIA</a></li>    
              <li ><a href="http://www.url.de/?p=44&cat=9" rel="bookmark" title="PLAYLIST">PLAYLIST</a></li>    
              <li ><a href="http://www.url.de/?p=68&cat=9" rel="bookmark" title="FOTO / VIDEO">FOTO / VIDEO</a></li>    
              <li ><a href="http://www.url.de/?p=70&cat=9" rel="bookmark" title="DOWNLOADS">DOWNLOADS</a></li>            
        </ul>
</div>