JSFiddle - React, Tailwind, and code Playground

HTML

<div id="div1">Conteudo</div>
<div id="div2">Conteudo</div>

CSS

div {
  width:200px;
  height:200px;
  border:2px solid black;
  padding:10px;
}

#div2 {
  box-sizing:border-box;
}