* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
}

.navbar {
    background-color: #fd6569;
    padding: 10px;
    text-align: center;
}

.navbar h1 {
    color: white;
}

.container {
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.book-container {
    padding: 15px;
    width: 25%;
    background-color: black;
    border-radius: 10px;
    color: white;
    margin: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.book-container h2 {
    color: #fd6569;
}

.book-container button {
    background-color: #fd6569;
    color: black;
    border-radius: 10px;
    padding: 5px 10px;
    border: none;
    margin-top: 10px;
    cursor: pointer;
}

.add-button {
    background-color: #fd6569;
    color: black;
    border-radius: 50%;
    padding: 20px 30px;
    font-size: 40px;
    border: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    cursor: pointer;
}

.popup-overlay {
    background-color: black;
    opacity: 0.8;
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
    display: none;
}

.popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    z-index: 2;
    width: 90%;
    max-width: 400px;
    display: none;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.popup h2 {
    margin-bottom: 10px;
}

.popup form {
    display: flex;
    flex-direction: column;
}

.popup input,
.popup textarea,
.popup button {
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 16px;
}

.popup button {
    background-color: #fd6569;
    color: black;
    border: none;
    cursor: pointer;
}