JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <div style="background: red;"> 1 </div>
</div>


<div class="container" style="position: relative;">
  <div style="position: absolute; background: red;"> 1 </div>
</div>

CSS

.container {
  margin-bottom: 10px;
}