body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    color: #333;
}

#bookListContainer {
    margin-top: 20px;
}

.book {
    background-color: #f8f8f8;
    border: 1px solid #ccc;
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
}

button {
    padding: 5px 10px;
    margin-top: 10px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

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

.details {
    display: none;
    margin-top: 10px;
    padding-left: 20px;
}

.details li {
    list-style-type: disc;
    background-color: #e8e8e8;
    padding: 5px;
    margin: 3px 0;
    border-radius: 3px;
}