body {
            background: #f8f9fa;
            font-family: 'Poppins', sans-serif;
            color: #333;
        }
        .container {
            max-width: 1500px;
            background: #ffffff;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0px 4px 15px rgba(0, 0, 0, 0.1);
            margin-top: 50px;
        }
        .pyb-card {
            background: #4135dc;
            color: white;
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin-bottom: 20px;
        }
        .card-container {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
        }
        .card {
            background: #007bff;
            color: white;
            padding: 15px;
            border-radius: 5px;
            text-align: center;
            width: 23%;
            min-height: 100px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: 0.3s;
            font-weight: bold;
            flex: 1 1 23%;
        }
        .card:hover {
            background: #0056b3;
        }
        a {
            color: white;
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .card {
                width: 48%;
            }
        }
        @media (max-width: 576px) {
            .card {
                width: 100%;
            }
        }