body {
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: rgb(44, 44, 44);
}

canvas{
  max-width: 100vh;
  max-height: 100vh;
  position: fixed;
  top: 50vh;
  left: 50vw;
  transform: translate(-50%,-50%);
}