JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" value="disabled input" disabled="disabled" />

<select disabled="disabled">
    <option value="a">option A</option>
    <option value="b">option B</option>
    <option value="c">option C</option>
</select>

CSS

[disabled] {
  color: #933;
  background-color: #ffc;
}

[disabled] option {
  background-color: #ffc;
}