JSFiddle - React, Tailwind, and code Playground

HTML

<div id=content>
      <div class="block-center">
        Is it a block level element?
      </div>
      <div class="block-center">
        Is it a block level element?
      </div>
      <div class="block-center">
        Is it a block level element?
      </div>
  </div>

CSS

.block-center {
    max-width: 200px;
    background: red;
    color: white;
    padding: 10px;
    margin: 5px;
  }
  #content {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
  }