body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f0f8ff;
            color: #000000;
        }

        /* Header Styles */
        header {
            background-color: #0154a7;
            color: white;
            padding: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        header nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
        }

        header nav ul li {
            margin: 0 1rem;
        }

        header nav ul li a {
            color: white;
            text-decoration: none;
        }


        /* Sidebar Styles */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            height: 100%;
            width: 200px;
            background-color: #0154a7;
            padding: 1rem;
            box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
            display: none;
            flex-direction: column;
        }

        .sidebar a {
            color: white;
            text-decoration: none;
            margin-bottom: 1rem;
        }

        .sidebar.active {
            display: flex;
        }

        .menu-button {
            background-color: #0154a7;
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            cursor: pointer;
        }

        /* Main Content */
        .main {
            margin-left: 0;
            padding: 2rem;
        }

        .cards {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
        }

        .card {
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            width: 400px;
            height: 500px;
            margin: 1rem;
            padding: 1rem;
            text-align: center;
        }

        .card img {
            width: 100%;
            border-radius: 8px;
        }

        .card button {
            background-color: #0154a7;
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            cursor: pointer;
            border-radius: 4px;
            margin-top: 1rem;
        }

        .card button:hover {
            background-color: #0065ca;
        }