/* styles.css */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f0f8ff; /* 淺藍背景 */
    background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"%3E%3Cpath fill="%23e6f7ff" fill-opacity="0.4" d="M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 69c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-16-3c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm46-2c3.87 0 7-3.13 7-7s-3.13-7-7-7-7 3.13-7 7 3.13 7 7 7zm-8-9c3.87 0 7-3.13 7-7s-3.13-7-7-7-7 3.13-7 7 3.13 7 7 7zM53 73c3.87 0 7-3.13 7-7s-3.13-7-7-7-7 3.13-7 7 3.13 7 7 7zM7 19c3.87 0 7-3.13 7-7s-3.13-7-7-7-7 3.13-7 7 3.13 7 7 7z"%3E%3C/path%3E%3C/svg%3E'); /* 簡單的SVG背景圖案 */
    background-repeat: repeat;
}
.banner {
    background-color: #4CAF50; /* 綠色橫幅 */
    color: white;
    text-align: center;
    padding: 40px 20px;
    font-size: 2em;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); /* 陰影效果 */
}
h1, h2 {
    color: #333;
}
nav {
    background-color: #fff;
    padding: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
nav ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 20px;
}
nav a {
    text-decoration: none;
    color: #007bff;
    padding: 10px 15px;
    transition: background-color 0.3s, color 0.3s; /* 過渡效果 */
}
nav a:hover {
    background-color: #007bff;
    color: white;
    border-radius: 5px;
}
.content {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}