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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #05070c;
  touch-action: none;
  overscroll-behavior: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 42%, #101827 0%, #080b12 55%, #04060a 100%);
}

canvas#game {
  display: block;
  touch-action: none;
  background: #080b12;
  box-shadow:
    0 0 0 1px rgba(120, 165, 225, 0.08),
    0 24px 80px rgba(0, 0, 0, 0.75);
  border-radius: 2px;
}