body {
  margin: 0;
  overflow: hidden;
  background: linear-gradient(#fff9c4, #fce4ec);
  font-family: 'Fredoka One', cursive;
}
#game {
  display: block;
  margin: auto;
  background: #eee;
}

#ui {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  text-align: center;
  color: #333;
  pointer-events: none;
}

#score {
  font-size: 24px;
  margin: 10px 0;
  color: #5d4037;
}

#startBtn,
#pauseBtn,
#restartBtn {
  pointer-events: auto;
  padding: 12px 28px;
  font-size: 18px;
  margin-bottom: 10px;
  background: #ffca28;
  border: none;
  border-radius: 30px;
  color: #fff;
  box-shadow: 0 4px 0 #f57f17;
  transition: transform 0.1s;
}

#startBtn:active,
#pauseBtn:active,
#restartBtn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #f57f17;
}

#instructions {
  margin-bottom: 10px;
}

#gameOver {
  font-size: 24px;
  color: red;
  margin-bottom: 10px;
}