JSFiddle - React, Tailwind, and code Playground

HTML

<body>
  <div class="container">
    <section class="item"></section>
    <section class="item"></section>
    <footer class="item"></footer>
  </div>
</body>

CSS

.container {
   display: -webkit-flex;
   display: flex;
   flex-direction: column;
   align-items: center;
   justify-content: center;
   width: 600px;
   background-color: blue;

}



.item {
  width: 500px;
  height: 100px;
  background-color: yellow;
  border: 2px solid red;
  
  
}