JSFiddle - React, Tailwind, and code Playground

by Liu ChangFeng

HTML

<style>
  div{
    width:100px;
    height:100px;
    background:#CFC;
    padding:20px;
    border:solid 2px #F00;
    margin-bottom:10px;
  }
  div.normal{}
  div.border-box{
    box-sizing:border-box;
  }
</style>
<div class="normal">
  块
</div>
<div class="border-box">
  border-box 块
</div>