JSFiddle - React, Tailwind, and code Playground

by Lalji Tadhani

HTML

<div class="outerDiv">
  <div class="myDiv">
  
  </div>
</div>

CSS

.outerDiv {
  width:100%;
  background-color:#000;
}
.myDiv {
  background-color:#ccc;
  width:200px;
  height:100px;
  margin-left:calc(50% - 200px/2);
}