.joystick-btn {
      width: 60px;
      height: 60px;
      background: transparent
      border-radius: 50%;
      
      display: flex;
      justify-content: center;
      align-items: center;
      color: white;
      font-size: 18px;
      transition: transform 0.1s linear;
      will-change: transform;
    }