JSFiddle - React, Tailwind, and code Playground

by vadimkot

HTML

<div class="container">
  <div class="preview">Preview</div>
  <div class="back">Back</div>
</div>

CSS

.container {
  position: relative;
  width: 500px;
  height: 300px;
}

.preview, .back {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.preview {
  height: 100%;
  background-color: red;
}

.back {
  position: absolute;
  top: 0;
  left: 0;
  height: 0;
  overflow: hidden;
  background-color: blue;
  /* transition: height 0.5s; */
}

.container:hover .back {
  height: 100%;
}