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

body {
  font-family: Arial, sans-serif;
  background: linear-gradient(to right, #2c3e50, #3498db);
  color: white;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 1.5s ease-in;
}

.container {
  text-align: center;
  background: rgba(0, 0, 0, 0.4);
  padding: 3rem;
  border-radius: 15px;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
  max-width: 90%;
  width: 400px;
  opacity: 0;
  transform: translateY(50px);
  animation: slideUp 1.5s ease forwards;
}

.container h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.container p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

button {
  background-color: #f1c40f;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
  color: #2c3e50;
  transition: background 0.3s ease;
  animation: bounce 2s infinite;
}

button:hover {
  background-color: #e67e22;
}

/* Animations */
@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}