global.css

* {
  box-sizing: border-box;
}

body {
  background: black;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 0;
  width: 100vw;
  height: 100vh;
}

#bounds {
  width: 100vmin;
  height: 100vmin;
}

#canva {
  display: block;
  width: 100%;
  height: 100%;
}