/* Top-left navigation */
        .top-nav {
            position: absolute;
            top: 10px;
            left: 10px;
            padding-left: 10px;
            padding-top: 5px;
        }

        .top-nav a {
            margin-right: 15px;
            text-decoration: none;
            color: #007bff;
        }

        .top-nav a:hover {
            text-decoration: underline;
        }