body {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.book {
    margin: 0 auto;
    width: 1200px; /* Adjusted width */
    height: 300px; /* Adjusted height */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.page, .hard {
    width: 100%;
    height: 100%;
    background: white;
    border: 1px solid #ddd;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.hard {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2em;
    background: #007bff;
    color: white;
}

.card {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(5px);
}