JSFiddle - React, Tailwind, and code Playground

HTML

<select>
    <option value="1">Option 1</option>
    <option value="2">Option 2</option>
    <option value="3">Option 3</option>
    <option value="4">Option 4</option>
</select>

CSS

input[type="text"], textarea, select, option {
    border:none;
    padding:5px;
    font-size:14px;
    color: #000;
    background: rgba(0, 0, 0, 0.1);
}