body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    color: #333;
}

header {
    background: #222;
    color: #fff;
    padding: 20px;
    text-align: center;
}

nav a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}

.hero {
    background: #4a6fa5;
    color: white;
    padding: 60px 20px;
    text-align: center;
}

.content {
    padding: 30px 20px;
    max-width: 800px;
    margin: auto;
}

.book-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.book-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    width: calc(50% - 20px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
footer {
    background: #222;
    color: #fff;
    text-align: center;
    padding: 15px;
    margin-top: 40px;
}