JSFiddle - React, Tailwind, and code Playground

by 규연 황

HTML

<div class="container">
  <div class="child">child</div>
</div>

CSS

.container {
  height: 300px;
  border: 1px solid red;
  margin: 50px;
  container-type: inline-size;
}
.child {
  position: absolute;
  top: 0;
  left: 0;
  border: 1px solid green;
}