JSFiddle - React, Tailwind, and code Playground

by LuckyCat

HTML

<div class="center"></div>

CSS

* {
  padding: 0;
  margin: 0;
}
html, body {
  height: 100%;
}

.center {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -50px;
  margin-left: -50px;
  
  background: red;
  animation: createBox .25s;
  width: 100px; height: 100px;
}
@keyframes createBox {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}