JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html> 
<html> 
<body> 

<button onclick="toggleMute()" id="button" type="button">Mute sound</button>
<br>

<video muted id="myVideo" width="320" height="176" controls>
  <source src="http://www.w3schools.com/tags/mov_bbb.mp4" type="video/mp4">
  <source src="http://www.w3schools.com/tags/mov_bbb.ogg" type="video/ogg">
  Your browser does not support HTML5 video.
</video>

<script>
var vid = document.getElementById("myVideo"), 
    button = document.getElementById("button");
 

function toggleMute() { 
    if(vid.muted) {
      vid.muted = false;
      button.innerHTML = "Unmute sound";
    } else {
      vid.muted = true;
      button.innerHTML = "Mute sound";
    }
}
</script> 

<p>Video courtesy of <a href="http://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p>

</body> 
</html>