body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background: linear-gradient(to bottom right, #007bff, purple);
        }

        header {
            background-color: #007bff;
            color: #fff;
            padding: 10px 0;
            text-align: center;
        }

        nav {
            text-align: center;
            margin-top: 20px;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            margin-top: 20px;
            padding: 20px;
            background-color: #fff;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        nav a {
            text-decoration: none;
            color: #007bff;
            margin: 0 10px;
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
        }

        footer {
            background-color: #f5f5f5;
            padding: 10px 0;
            text-align: center;
            position: fixed;
            bottom: 0;
            width: 100%;
        }

        .description {
            margin-top: 20px;
            padding: 20px;
            background-color: #fff;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        .description h2 {
            margin-bottom: 10px;
        }

        .description p {
            line-height: 1.5;
        }

        .error-message {
            color: #ff0000;
            text-align: center;
            margin-top: 10px;
            display: none;
        }

        input[type="text"],
        input[type="email"],
        input[type="password"] {
            width: 100%;
            padding: 10px;
            margin-bottom: 15px;
            border: 1px solid #ccc;
            border-radius: 3px;
        }

        select {
            width: 100%;
            padding: 10px;
            margin-bottom: 15px;
            border: 1px solid #ccc;
            border-radius: 3px;
            background-color: #fff;
            font-size: 16px;
        }

        input[type="submit"] {
            width: 100%;
            background-color: #007bff;
            color: #fff;
            border: none;
            padding: 10px;
            border-radius: 3px;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        input[type="submit"]:hover {
            background-color: #0056b3;
        }

        .price-card {
            background-color: #fff;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            padding: 20px;
            margin-bottom: 20px;
        }

        .price-card h2 {
            margin-top: 0;
        }

        .price-card p {
            margin-bottom: 15px;
        }

        .price-card a {
            display: block;
            background-color: #007bff;
            color: #fff;
            text-align: center;
            text-decoration: none;
            padding: 10px;
            border-radius: 5px;
            transition: background-color 0.3s;
        }

        .price-card a:hover {
            background-color: #0056b3;
        }