<form class="dropdown">
<label for="dropdown-menu">Please choose an option..</label>
<input list="dropdown-menu"/>
<datalist id="dropdown-menu" id="dropdown-menu">
<option value="option 1"></option>
<option value="option 2"></option>
<option value="option 3"></option>
<option value="option 4"></option>
</datalist>
</form>