body {
  margin: 0;
  background-color: #222;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

canvas {
  border: 4px solid #888;
  background-size: cover;
}

.keyboard {
  position: absolute;
  bottom: 20px;
  display: grid;
  grid-template-columns: repeat(3, 60px);
  grid-template-rows: repeat(3, 60px);
  gap: 8px;
  background-color: #222;
  padding: 12px;
  border-radius: 10px;
  color: white;
  font-family: sans-serif;
}

.key {
  background-color: #444;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  padding: 6px;
  text-align: center;
}

.key span {
  font-size: 14px;
  color: #bbb;
}

.action {
  background-color: #28a745;
}

.empty {
  width: 60px;
  height: 60px;
}

.left {
  left: 20px;
}

.right {
  right: 20px;
}