JSFiddle - React, Tailwind, and code Playground

HTML

<body>
  <div class="parent">
    <div class="child">element 2</div>
  </div>
</body>

CSS

body {
  border:1px solid #000;
}
.parent {
  border:1px solid red;
}
.child {
  border:1px solid green;
  margin-top: 10px;
}