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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0a0a1a;
  font-family: monospace;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: none;
}