JSFiddle - React, Tailwind, and code Playground

by WoJWoJ

HTML

<div class="night">
  <div class="section-01">
    hello world
  </div>
  wazaa
</div>

CSS

.night .section-01 {
  color: red;
  font-size: 200%

}

.day .section-01 {
  color: yellow;
}