vueselect with classes

vueselect.html

<div class="select__dropdown>
  <span class="select__value"></span>
  <ul class="select__optionlist">
    <li class="select__option">Option 1</li>
    <li class="select__option">Option 2</li>
    <li class="select__option">Option 3</li>
  </ul>
</div>