body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom right, #4CAF50, #2196F3); /* Green to Blue Gradient */
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-image: linear-gradient(to bottom right, red, yellow, limegreen, blue);
    padding: 1em;
    text-align: center;
}

header h1 {
    color: #333;
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 1em;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: bold;
}

main {
    flex-grow: 1;
    padding: 2em;
    text-align: center;
}

.homepage-main h2, .about-main h2, .books-main h2 {
    color: #fff; /* White text for headings on gradient background */
}

#book-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2em;
    margin-top: 2em;
}

.book-item {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 1.5em;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 300px;
    text-align: left;
}

.book-item h3 {
    margin-top: 0;
    color: #333;
}

.book-item p {
    color: #666;
}

footer {
    background-color: rgba(255, 255, 255, 0.8);
    padding: 1em;
    text-align: center;
    margin-top: 2em;
}

button {
    cursor: pointer;
    background-image: linear-gradient(to right, green, limegreen);
}