title: icon inside select before option
body: <p>Expected Result:
  Icon before Option</p>
  
  <p><img src="https://i.stack.imgur.com/5WTOh.png" alt="1"></p>
  
  <p>Current Result:
  Where is the icon?</p>
  
  <p><img src="https://i.stack.imgur.com/s0uHW.png" alt="2"></p>
  
  <p>How to display Icon before <code>Please Select...</code> or selected option ?</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>.selectDropDown {
      height: 5em;
      width: 30em;
      background: #f3f3f3;
      border: 1px solid #d2d8d8;
      -webkit-appearance: none;
      -moz-appearance: none;
      -ms-appearance: none;
      -o-appearance: none;
      appearance: none;
      padding: 16px 20px 16px 50px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;p class="fieldset"&gt;
    &lt;div class="form-group"&gt;
      &lt;i class="glyphicon glyphicon-menu-down"&gt;&lt;/i&gt;
      &lt;select class="form-control selectDropDown" id="sel1"&gt;
        &lt;option value="" disabled selected hidden&gt;Please select...&lt;/option&gt;
        &lt;option&gt;option 1&lt;/option&gt;
        &lt;option&gt;option 2&lt;/option&gt;
        &lt;option&gt;option 3&lt;/option&gt;
      &lt;/select&gt;
    &lt;/div&gt;
  &lt;/p&gt;</code></pre>
  </div>
  </div>
  </p>