JSFiddle - React, Tailwind, and code Playground

by 규연 황

HTML

<button type="button" class="btn">
  확인
</button>
<button type="button" class="btn btn-primary">
  확인
</button>

CSS

:root {
  --bg-color: red;  
}
.btn { 
  background-color: var(--bg-color);
}
.btn-primary { 
  --bg-color: green; 
}