lements, which can be grouped by
  &lt;optgroup&gt; elements. Options can be pre-selected for the user.</p>

<p>The Material Design Lite Ext (MDLEXT) <strong>select field</strong> component is an enhanced version of the standard
  HTML &lt;select&gt; element. A select field consists of a horizontal line indicating where keyboard input
  can occur and, typically, text that clearly communicates the intended contents of the select field.
  An icon (at the right hand side) indicates that the select field has us