<html>
  <head>
    <meta charset="UTF-8" />
    <title>spine-threejs</title>
    <style>
      * {
        margin: 0;
        padding: 0;
      }

      body,
      html {
        height: 100%;
      }

      canvas {
        position: absolute;
        width: 100%;
        height: 100%;
      }
    </style>

    <script type="importmap">
    {
        "imports": {
            "three": "https://cdn.jsdelivr.net/npm/three@0.162.0/build/three.module.js",
            "three/addons/": "https://cdn.jsdelivr.net