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 {
  display: flex;
  width: 100%;
  background-color: red;
}

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

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