JSFiddle - React, Tailwind, and code Playground

HTML

<select class='my_select'>
  <option>Первый</option>
  <option>Первый</option>
  <option>Первый</option>
</select>

CSS

.my_select {
  display: block;
  width: 100px;
  height: 50px;
  font-size: 19px;
  color: green;
  background-color: yellow;
}