html,body {
  margin: 0;
  padding: 0;
}

body {
  width: 100vw;
  min-height: 100vh;
  min-height: -webkit-fill-available;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

html {
  height: -webkit-fill-available;
}

canvas {
  display: block;
}