JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
      <div class="content">
      <video src="http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4" />
      </div>
      <div class="footer">footer </div>
</div>

CSS

.wrapper {
  padding: 10px;
  display: flex;
  flex-direction: column;
  max-height: 300px;
  background-color: green;
}

.content{
  width: 100%;
  background-color: red;
}

video{
  width: 100%;
  height: 100%;
}

.footer{
  width: 100%;
  background-color: orange;
}