html, body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #181818;
}

body {
  width: 100vw;
  height: 100vh;
}

#game-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  background: #181818;
  border: none;
  margin: 0;
  padding: 0;
}