/* style.css */

html,body {
  margin: 0;
  padding: 0;
background: #222;
}

main {
  text-align: center;
  width: 100%;
}

canvas {
display: block;
}

main {
align-items: center;
display: flex;
height: 100vh; /* Fallback for browsers that do not support Custom Properties */
justify-content: center;
}
main canvas { 
height: auto !important;
width: auto !important;
max-width: 100%;
max-height: 100%;
display: inline-block; /* Instead of display: block; */
margin: 0 auto;
vertical-align: middle;
touch-action: none;
}