JSFiddle - React, Tailwind, and code Playground

by exercices

HTML

<div class="formes carre">
</div>
<br>
<div class="formes rectangle">

</div>

CSS

.formes {
  border-radius: 10px;
  border: dashed black 2px
}

.carre{
  height: 100px;
  width: 100px;
}

.rectangle{
  height: 100px;
  width: 200px;
}