body {
    font-family: sans-serif;
    margin: 0;
    padding: 20px;
    color: #333;
    background-color: #fff;
}

header {
    text-align: center;
    border-bottmo: 2px solid #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
}

main {
    max-width: 800px;
    margin: 0 auto;
}

section {
    margin-bottom: 30px;
    padding: 15px;
    border: 1px solid #ddd;
}

h2 {
    margin-top: 0;
    font-size: 1.2rem;
}

form{
    display: flex;
    flex-direction: column;
    gap: 10px;
}

form div {
    display: flex;
    flex-direction: column;
}

input[type="text"],
input[type="number"] {
    padding: 8px;
    border: 1px solid #ccc;
}

.checkbox-row {
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

button {
    padding: 10px;
    cursor: pointer;
    background-color: #f0f0f0;
    border: 1px solid #999;
}

button:hover {
    background-color: #e0e0e0;
}

.book-item {
    border: 1px solid #eee;
    pading: 10px;
    margin-bottom: 10px;
}

.book-item h3 {
    margin: 0;
}

.book-item p {
    margin: 5px 0;
    font-size: 0.9rem;
}

.action-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

#bookFormSubmit {
    background-color: #333;
    color: #fff;
}