body {
      margin: 0;
      height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      background: linear-gradient(135deg, #3f87a6, #ebf8e1, #f69d3c);
      font-family: Arial, sans-serif;
      animation: backgroundShift 10s infinite alternate;
    }

    h1 {
      font-size: 4rem;
      color: white;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
      animation: float 3s ease-in-out infinite;
    }

    @keyframes float {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(-20px);
      }
    }

    @keyframes backgroundShift {
      0% {
        background-position: 0% 50%;
      }
      100% {
        background-position: 100% 50%;
      }
    }