el>
    </p>
    <p>
      <label class="error" for="select_dd">
        Select drop-down
      </label>
      <br />
      <select class="error" id="select_dd" name="select_dd">
        <optgroup label="Group 1">
          <option value="1">Some text goes here</option>
          <option value="2">Another choice could be here</option>
          <option value="3">Yet another item to be chosen</option>
        </optgroup>
        <optgroup label="Group 2">
          <option value="4">Some text goes here</opti