title: How to center a vertical aligned menu in css?
body: <p>Here's the HTML code itself</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>html {
    background: url(wallpaper.jpg) no-repeat center center fixed;
    background-size: cover;
  }
  
  .header {
    text-align: center;
    font-family: impact;
    font-size: 40px;
    margin-left: 500px;
    margin-right: 500px;
    color: gray;
  }
  
  #introduction {
    font-family: times;
    text-align: center;
    text-decoration: underline;
    color: #1F1B1B;
  }
  
  .paragraph {
    text-indent: 20px;
    color: gray;
    text-align: center;
    margin-left: 200px;
    margin-right: 200px;
  }
  
  .rap {
    float: left;
    margin-right: 10px;
  }
  
  ul li a {
    display: block;
    text-align: center;
    font-family: georgia;
    background: rgba(16, 16, 16, 0.4);
    width: 130px;
    text-decoration: none;
    margin: 10px;
    padding: 5px;
    border: 1px solid black;
    border-radius: 5px;
    color: white;
    font-size: 19px;
    vertical-align: middle;
    list-style: none;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;ul&gt;
    &lt;li&gt;&lt;a href="#2pac"&gt;2pac&lt;/a&gt;&lt;/li&gt;
    &lt;li&gt;&lt;a href="#Bigge Smalls"&gt;Biggie Smalls&lt;/a&gt;&lt;/li&gt;
    &lt;li&gt;&lt;a href="#Nas"&gt;Nas &lt;/a&gt;&lt;/li&gt;
    &lt;li&gt;&lt;a href="#Jay Z"&gt;Jay Z &lt;/a&gt;&lt;/li&gt;
    &lt;li&gt;&lt;a href="#T.I."&gt;T.I.&lt;/a&gt;&lt;/li&gt;
  &lt;/ul&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>What can I do to center my menu itself? It keeps floating to the left and I want the whole thing dead center in my mock website. </p>