JSFiddle - React, Tailwind, and code Playground

by Anderson Carlos Woss

HTML

<select id="select_pt" class="select_pt" size="4">
    <option value="alemanha">Alemanha</option>
    <option value="austria">Áustria</option>
    <option selected value="belgica">Bélgica</option>
    <option value="bulgaria">Bulgária</option>
    <option value="chipre">Chipre</option>
    <option value="croacia">Croácia</option>
    <option value="dinamarca">Dinamarca</option>
</select>

CSS

select {
  width: 200px;
}

select > option:checked {
  box-shadow: 0 0 10px 100px white inset;
  transition: all .2s ease-in-out;
  font-weight: bold;
}