html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: black;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
}

main {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

canvas {
  display: block;
  max-width: 100vw;
  max-height: 100vh;
  width: auto;
  height: auto;
  cursor: default;
  outline: none;
}