#interactive.viewport {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
}

canvas.drawing, canvas.drawingBuffer {
    position: absolute;
    top: 0;
    left: 0;
}

#book-info {
    margin-top: 20px;
}

#prompt {
    display: none;
    margin-top: 20px;
}

#prompt-message {
    font-weight: bold;
}

#book-title, #book-author, #book-desc {
    margin-top: 10px;
    font-size: 16px;
}