index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script defer src="face-api.min.js"></script>
  
  
  <style>
    body {
      margin: 0;
      padding: 0;
      width: 100%;
      height: 100%;
    }

    #textBox {
	  font-size:40px;
	  padding: 25px;
	  background-color:rgba(255, 255, 0, 0.5);
	  color: #000;
	  display:none;
    }
	
  </style>
</head>
<body>
	<video id="video" width="720" height="560" autoplay muted></video>
	
	<div id="textBox"></div>
	<br />
	<audio id="sound" controls loop>
	  <source src="beep.mp3" type="audio/mpeg">
		Your browser does not support the audio element.
	</audio>
	<script defer src="script.js"></script>
</body>
</html>