body {
      margin: 0;
      background: linear-gradient(to right, #ffecd2, #fcb69f);
      font-family: 'Segoe UI', sans-serif;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      height: 100vh;
      overflow: hidden;
    }

    h1 {
      font-size: 3em;
      color: #ff4d6d;
      animation: pop 1s ease-in-out infinite alternate;
    }

    p {
      font-size: 1.5em;
      color: #333;
      margin: 10px 20px;
      text-align: center;
    }

    .balloons {
      position: absolute;
      bottom: -150px;
      width: 100%;
      display: flex;
      justify-content: space-around;
      z-index: 0;
    }

    .balloon {
      width: 60px;
      height: 80px;
      background-color: #ff6b81;
      border-radius: 50% 50% 50% 50%;
      animation: float 4s infinite ease-in-out;
      position: relative;
    }

    .balloon::after {
      content: '';
      width: 2px;
      height: 50px;
      background: #555;
      position: absolute;
      bottom: -50px;
      left: 50%;
      transform: translateX(-50%);
    }

    .balloon:nth-child(2) {
      background-color: #6b5b95;
      animation-delay: 1s;
    }

    .balloon:nth-child(3) {
      background-color: #feb236;
      animation-delay: 2s;
    }

    .balloon:nth-child(4) {
      background-color: #d64161;
      animation-delay: 3s;
    }

    @keyframes pop {
      from { transform: scale(1); }
      to { transform: scale(1.1); }
    }

    @keyframes float {
      0% { transform: translateY(0px); }
      50% { transform: translateY(-150px); }
      100% { transform: translateY(0px); }
    }

    .message-box {
      background: #fff;
      padding: 20px 40px;
      border-radius: 20px;
      box-shadow: 0 0 20px rgba(0,0,0,0.1);
      z-index: 1;
      animation: fadeIn 2s ease forwards;
    }

    @keyframes fadeIn {
      0% { opacity: 0; transform: translateY(20px); }
      100% { opacity: 1; transform: translateY(0); }
    }

    .footer {
      position: absolute;
      bottom: 10px;
      font-size: 1em;
      color: #444;
    }

    #music-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: #ff4d6d;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 10px;
    font-size: 1em;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: background 0.3s;
    }

    #music-btn:hover {
    background: #e03e5d;
    }

    .slideshow {
      width: 300px;
      height: auto;
      margin-top: 30px;
      overflow: hidden;
      border-radius: 20px;
      box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    }

    .slide {
      width: 100%;
      display: none;
      border-radius: 20px;
    }