index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Zombie Dash</title>
    <script src="//cdn.jsdelivr.net/npm/phaser@3.11.0/dist/phaser.js"></script>
    <style type="text/css">
      body {
        margin: 0;
      }
      canvas {
        /* position: absolute;
        top: 0px;
        left: 0px;
        right: 0px;
        bottom: 0px;
        border-radius: 100px rgb(136, 136, 136); */
        display: block;
        margin: auto;
        padding: 50px;
      }
    </style>
  </head>
  <body>
    <div class="main-div">
      <div class="zombie-game"></div>
    </div>
    <script type="module" src="script.js"></script>
  </body>
</html>