JSFiddle - React, Tailwind, and code Playground

HTML

<div id="cont"> 
<video width="320" height="240" controls>
  <source src="http://www.w3schools.com/html/movie.mp4" type="video/mp4">
  <source src="http://www.w3schools.com/html/movie.ogg" type="video/ogg">
Your browser does not support the video tag.
</video>
</div>

CSS

video {
    display: block;
    margin-left: auto;
    margin-right: auto;
}
#cont{
    width: 500px;
    height: 240px;
    background: blue;
}