html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #000000;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}