html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
}

header {
    background-color: #0066cc;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

.logo-placeholder img {
    max-width: 100px;
    margin-bottom: 10px;
}

h1 {
    margin: 0;
    font-size: 2.5em;
}

.book-cover img {
    max-width: 250px;
		display: flex;
    justify-content: center;
    gap: 20px; /* space between images */
    margin: 20px auto;

}

main {
    flex: 1;
    padding: 20px;
}

section {
    margin-bottom: 20px;
}

h2 {
    color: #333;
}

.buy-now {
    background-color: #e6f7ff;
    padding: 20px;
    text-align: center;
    border-radius: 5px;
}

.buy-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
}

.buy-button:hover {
    background-color: #005bb5;
}

.about-book {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.book-details {
    display: flex;
    align-items: center;
}

.book-back-cover {
    max-width: 250px;
    margin-right: 20px;
}

.book-description {
    flex: 1;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    position: relative;
    width: 100%;
}