JSFiddle - React, Tailwind, and code Playground

HTML

<div id="hinten">
   <div id="vorne"></div>
</div>

CSS

#hinten {
  height:50px;
  width:50px;
  padding:25px;
  background-color:yellow;
}
#vorne {
  height:50px;
  width:50px;
  background-color:red;
}