.container {
                max-width: 900px;
                margin: 0 auto;
                padding: 20px;
            }
            .directory {
                background-color: #f4f4f4;
                padding: 15px;
                margin-bottom: 20px;
                box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            }
            .directory h3 {
                margin-bottom: 10px;
            }
            .directory ul {
                list-style-type: none;
                padding-left: 0;
            }
            .directory ul li {
                margin-bottom: 5px;
            }
            .directory ul li a {
                text-decoration: none;
                color: #0073e6;
            }
            .content-section {
                margin-bottom: 40px;
            }
            .intro p {
                font-size: 1.2rem;
            }
            table {
                width: 100%;
                border-collapse: collapse;
                margin-top: 20px;
            }
            table th, table td {
                border: 1px solid #ccc;
                padding: 10px;
                text-align: left;
            }
            table th {
                background-color: #f4f4f4;
            }