title: How to remove blue background on hover and on focus for select option
body: <p>Not able to change the default blue background colour on hover of select option.</p>
  
  <p>Tried css and HTML as below</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>option:hover {
    background: #000 !important;
    color: #fff;
  }
  
  option:checked {
    background: #000 !important;
    color: #fff;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;select&gt;
    &lt;option&gt; AA&lt;/option&gt;
    &lt;option&gt; BB&lt;/option&gt;
  &lt;/select&gt;</code></pre>
  </div>
  </div>
  </p>