JSFiddle - React, Tailwind, and code Playground

HTML

<form action="" method="post">
<button type="submit">
<select>
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
</select>
</button>
</form>

CSS

select {width:100px;}
button {background:transparent;border:0;}