title: Difficulty creating CSS menu with multiple columns
body: <p>I've read through some similar threads on this site and found some helpful tips, but I'm still having difficulty getting columns to work correctly in my CSS drop down menu. The test site is here: <a href="http://iphonebuy-host1.gaiahost.net/index.html" rel="nofollow">http://iphonebuy-host1.gaiahost.net/index.html</a></p>
  
  <p>In part I'm using ideas from method 4 in this article - <a href="http://alistapart.com/article/multicolumnlists" rel="nofollow">http://alistapart.com/article/multicolumnlists</a> - however this is for XHTML and I'm using HTML, maybe that's causing my issue? </p>
  
  <p>The main thing is the list items in the second column don't stick to the bottom of the header. According to the referenced article, setting a negative margin on .reset is supposed to bring the entire second column up where I want it, but only the header (which has .reset applied to it) is moving up. </p>
  
  <p>I should say that you probably have to view my menu in Firefox to see what I'm talking about - so far it's even more messed up in Safari and I haven't even tried IE or Chrome. </p>
  
  <p><strong>CSS</strong></p>
  
  <pre><code>/** top navigation menu **/
  .topnav {
      list-style: none;
      background-color: #FFF;
      font: 1.313em arial, sans-serif;
      color: #0071BC;
      margin: -1.8em 0 1.2em 25em;
      text-align: center;
  }
  .topnav li {
      position: relative;
      display: inline;
      padding: 0 .5em 0 .5em;
      border: none;
  }
  .topnav a { 
      display: inline-block;
  }
  
  /** for drop-down menu **/
  .topnav li ol {
      background: #fff;
      list-style: none;
      position: absolute;
      width: 15.5em;
      font: .8em arial, sans-serif;
      padding: 0 1em .5em .5em;
      margin-top: -.1em;
      left: -9999px;
      z-index: 200;
      -webkit-border-radius: 0 0 .5em .5em;
         -moz-border-radius: 0 0 .5em .5em;
              border-radius: 0 0 .5em .5em;
      -webkit-box-shadow:  0 3px 2px 1px #ccc;
         -moz-box-shadow:  0 3px 2px 1px #ccc;
              box-shadow:  0 3px 2px 1px #ccc;
  }  
  .topnav li li h1 {
      font: bold 1.2em arial, sans-serif;
      white-space: nowrap;
      margin: .5em 0 .5em 0;
  }
  .topnav li li h2 {
      font: 1em arial, sans-serif;
      white-space: nowrap;
  }
  .topnav li li a {
      white-space: nowrap;
      display: block;
  }
  .topnav li: hover ol {
      left: 0;
      margin-left: -.9em;
  }
  .topnav li: hover a {
      color: #99CCCC;
  }
  .topnav li: hover ol a {
      color: #0071BC;
  }
  .topnav li: hover ol a: hover {
      color: #99CCCC;
  }
  .topnav li li.column1 { 
      margin-left:  0em;
      width: 6.8em;
      float: left;
      line-height: 1.5em;
  }
  .topnav li li.column2 { 
      margin-left: 10em;
      width: 4em;
      float: left;
      line-height: 1.5em;
  }
  .topnav li li.reset {
      margin-top: -10.8em;
  }
  </code></pre>
  
  <p><strong>HTML</strong></p>
  
  <pre><code>&lt;div class="topnav"&gt;
    &lt;ol&gt;
      &lt;li&gt;&lt;a href="index.html" class="vertical-line"&gt;Home&lt;/a&gt;&lt;/li&gt; 
      &lt;li&gt;&lt;a href="#" class="vertical-line"&gt;Get Quote&lt;/a&gt;
        &lt;ol&gt;
          &lt;li class="column1"&gt;&lt;h1&gt;Select phone:&lt;/h1&gt;&lt;/li&gt;
          &lt;li class="column1"&gt;&lt;h2&gt;CDMA&lt;/h2&gt;&lt;/li&gt;
          &lt;li class="column1"&gt;&lt;a href="cdma3gs8gb"&gt;3GS 8GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column1"&gt;&lt;a href="cdma3gs16gb"&gt;3GS 16GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column1"&gt;&lt;a href="cdma4-8gb"&gt;4 8GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column1"&gt;&lt;a href="cdma4-16gb"&gt;4 16GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column1"&gt;&lt;a href="cdma4s16gb"&gt;4S 16GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column1"&gt;&lt;a href="cdma4s32gb"&gt;4S 32GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column2 reset"&gt;&lt;h2&gt;AT&amp;amp;T GSM&lt;/h2&gt;&lt;/li&gt;
          &lt;li class="column2"&gt;&lt;a href="att3gs8gb"&gt;3GS 8GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column2"&gt;&lt;a href="att3gs16gb"&gt;3GS 16GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column2"&gt;&lt;a href="att4-8gb"&gt;4 8GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column2"&gt;&lt;a href="att4-16gb"&gt;4 16GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column2"&gt;&lt;a href="att4s16gb"&gt;4S 16GB&lt;/a&gt;&lt;/li&gt;
          &lt;li class="column2"&gt;&lt;a href="att4s32gb"&gt;4S 32GB&lt;/a&gt;&lt;/li&gt;
        &lt;/ol&gt;
      &lt;/li&gt;
      &lt;li&gt;&lt;a href="about.html"&gt;About&lt;/a&gt;&lt;/li&gt;
    &lt;/ol&gt;
  &lt;/div&gt;
  </code></pre>