body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    padding: 0;
}

main {
    max-width: 800px;
    margin: 80px auto 20px; /* Adjusted margin to account for fixed header */
    padding: 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: #007BFF;
}

.book-section {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.book-cover {
    width: 150px;
    height: auto;
    border-radius: 10px;
    margin-right: 20px;
}

.book-details {
    flex: 1;
}

.book-details h2 {
    margin-top: 0;
}

.book-details ul {
    list-style-type: none;
    padding: 0;
}

.book-details ul li {
    margin-bottom: 10px;
}

.buy-now-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 10px;
    transition: background-color 0.3s ease;
}

.buy-now-button:hover {
    background-color: #0056b3;
}

.subscribe-section {
    margin-top: 40px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.subscribe-section form {
    display: flex;
    flex-direction: column;
}

.subscribe-section label {
    margin-bottom: 10px;
    font-weight: bold;
}

.subscribe-section input[type="email"] {
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.subscribe-section button {
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.subscribe-section button:hover {
    background-color: #0056b3;
}