JSFiddle - React, Tailwind, and code Playground

HTML

<div>

<div class="right"></div>
<div class="left"></div>

</div>

CSS

.right{
   display:inline-block;
   margin: 0 auto;
   background: red;
}
.left{
   display:inline-block;
   margin: 0 auto;
      background: #00FF00;
  }