body {
  background: #111;
  color: #eee;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
  margin: 20px;
}

h1 {
  margin-bottom: 10px;
}

.tetris {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 20px;
}

canvas {
  background: #222;
  border: 3px solid #555;
  image-rendering: pixelated;
}

.info {
  text-align: left;
  color: #ccc;
}

.info ul {
  padding-left: 20px;
}