title: Input with datalist grouping
body: <p>I do with select in two ways:</p>
  
  <ol>
  <li>With disabled option.</li>
  <li>With optgroup tag.</li>
  </ol>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;select name="curso1" id="curso1"&gt;
      &lt;option disabled="" style="font-size:12px; text-align:left; font-family:Arial Black"&gt;Group&lt;/option&gt;
      &lt;option value="1"&gt;Windows 8&lt;/option&gt;
      &lt;option value="8"&gt;lalalala&lt;/option&gt;
  &lt;/select&gt;
  &lt;select&gt;
      &lt;optgroup label="Swedish Cars"&gt;
          &lt;option value="volvo"&gt;Volvo&lt;/option&gt;
          &lt;option value="saab"&gt;Saab&lt;/option&gt;
      &lt;/optgroup&gt;
      &lt;optgroup label="German Cars"&gt;
          &lt;option value="mercedes"&gt;Mercedes&lt;/option&gt;
          &lt;option value="audi"&gt;Audi&lt;/option&gt;
      &lt;/optgroup&gt;
  &lt;/select&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>How to do this in a datalist?</p>
  
  <p>How do group with the datalist?</p>