body {
            background-color: #f4f4f9;
            padding-top: 50px;
        }
        .container {
            max-width: 750px;
            margin-top: 80px;
        }
        .card {
            border-radius: 10px;
            margin-bottom: 25px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            background-color: #ffffff;
        }
        .card:hover {
            transform: scale(1.03);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        .card-header {
            font-size: 20px;
            color: #fff;
            text-align: center;
            background-color: #5a6268;
            padding: 18px;
            border-top-left-radius: 10px;
            border-top-right-radius: 10px;
        }
        .card-body {
            padding: 25px 20px;
            text-align: center;
        }
        .card-body p {
            font-size: 16px;
            color: #777;
        }
        .btn {
            width: 100%;
            padding: 14px;
            font-size: 16px;
            margin-top: 12px;
            border-radius: 8px;
            transition: background-color 0.3s ease;
        }
        .btn-success {
            background-color: #6c757d;
            border: none;
        }
        .btn-success:hover {
            background-color: #5a6268;
        }
        .btn-primary {
            background-color: #4e73df;
            border: none;
        }
        .btn-primary:hover {
            background-color: #2e59d9;
        }
        .btn-info {
            background-color: #17a2b8;
            border: none;
        }
        .btn-info:hover {
            background-color: #138496;
        }
        .section-title {
            text-align: center;
            font-size: 28px;
            margin-bottom: 40px;
            font-weight: bold;
            color: #333;
        }