Select

<div class="md-form">
    <div class="aria-select">
        <button aria-haspopup="true" aria-controls="example-select-list" aria-labelledby="example-select-button example-select-label" id="example-select-button">
            Selecteer een optie
        </button>
        <label id="example-select-label" for="example-select-button">Voorbeeld dropdown</label>
        <ul tabindex="-1" role="listbox" aria-labelledby="example-select-element" class="aria-select-list hidden" id="example-select-list">
            <li id="example-select-element_1" data-value="1" role="option" aria-selected="false">
                Optie 1
            </li>
            <li id="example-select-element_2" data-value="2" role="option" aria-selected="false">
                Optie 2
            </li>
            <li id="example-select-element_3" data-value="3" role="option" aria-selected="false">
                Optie 3
            </li>
        </ul>
        <input type="hidden" id="example-select-element" name="example-select-element">
    </div>
</div>