* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  background: #0a0a0f;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-family: monospace;
}

#gameCanvas {
  display: block;
  cursor: default;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  max-width: 100vw;
  max-height: 100vh;
}

#gameCanvas:focus {
  outline: none;
}