title: How to set bold only to first level list elements?
body: <p>How to set bold style with CSS only to the "titles" in this code?</p>
  
  <p>Live example: <a href="http://jsbin.com/xofudovoda/edit?html,css,output" rel="nofollow">jsbin.com/xofudovoda/</a></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>.container &gt; ol {
    font-weight: bold;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="container"&gt;
    &lt;ol type="I"&gt;
      &lt;li&gt;
        Title 1
        &lt;ol&gt;
          &lt;li&gt;sub 1&lt;/li&gt;
          &lt;li&gt;sub 2&lt;/li&gt;
        &lt;/ol&gt;
      &lt;/li&gt;
      &lt;li&gt;
        Title 2
        &lt;ol&gt;
          &lt;li&gt;sub 1&lt;/li&gt;
          &lt;li&gt;sub 2&lt;/li&gt;
        &lt;/ol&gt;
      &lt;/li&gt;
    &lt;/ol&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>