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

body {
  background: linear-gradient(to bottom, #5c94fc, #ffffff);
  font-family: 'Press Start 2P', cursive, sans-serif;
}

.game-board {
  width: 100%;
  max-width: 900px;
  height: 500px;
  border-bottom: 15px solid rgb(35, 160, 35);
  margin: 50px auto;
  position: relative;
  overflow: hidden;
  background: linear-gradient(#87ceeb, #e0f6ff);
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  position: relative;
}

.pipe {
  position: absolute;
  bottom: 0;
  width: 80px;
  animation: pipe-animation 1.5s infinite linear;
}

.mario {
  width: 150px;
  position: absolute;
  bottom: 0;
  transition: transform 0.1s;
}

.jump {
  animation: jump 500ms ease-out;
}

.clouds {
  position: absolute;
  top: 20px;
  left: 100%;
  width: 550px;
  animation: clouds-animation 20s infinite linear;
  opacity: 0.8;
}

.score {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 18px;
  color: white;
  background-color: rgba(0, 0, 0, 0.5);
  padding: 8px 12px;
  border-radius: 8px;
  font-family: 'Arial', sans-serif;
  font-weight: bold;
}

@keyframes pipe-animation {
  from {
    left: 100%;
  }
  to {
    left: -80px;
  }
}

@keyframes jump {
  0% {
    bottom: 0;
  }
  40%, 50%, 60% {
    bottom: 180px;
  }
  100% {
    bottom: 0;
  }
}

@keyframes clouds-animation {
  from {
    left: 100%;
  }
  to {
    left: -550px;
  }
}