JSFiddle - React, Tailwind, and code Playground

by xxxvvvxxx

HTML

<div id="d1">
box-sizing:border-box;
</div>
<div id="d2">
box-sizing:content-box;
</div>

CSS

div{
  width:100px; height:100px;
  border:10px solid #ff0000;
}
div#d1 {
  box-sizing:border-box;
}
div#d2 {
  box-sizing:content-box;
}