body {
  margin: 0;
  height: 100vh;
  background: linear-gradient(to top, black, white);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: sans-serif;
}

.container {
  background-color: rgba(255, 255, 255, 0.1); 
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
  text-align: center;
}

button {
  padding: 12px 25px;
  font-size: 18px;
  border: none;
  background-color: black;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background-color: #333;
}


.image {
  max-width: 300px;
  margin-top: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}


.fade-text {
  opacity: 0;
  font-size: 20px;
  margin-top: 15px;
  transition: opacity 1.5s ease-in;
}


#content.visible .fade-text {
  opacity: 1;
}


.hidden {
  display: none;
}


.ball {
  position: absolute;
  font-size: 30px;
  animation: float 5s linear infinite;
  pointer-events: none;
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}