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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0D0500;
  font-family: serif;
}

#gameCanvas {
  display: block;
  position: absolute;
  top: 0; left: 0;
  cursor: crosshair;
  touch-action: none;
}