JSFiddle - React, Tailwind, and code Playground
HTML
<select id="choice" >
<option value="default" selected>Choose a Value</option>
<option value="first">First Value</option>
<option value="second">Second Value</option>
<option value="third">Third Value</option>
</select>
CSS
select {
font-size: 0.9rem;
padding: 2px 5px;
}
JavaScript
document.getElementById('choice').onchange = function() {
alert(this.value);
}