#flipbook .page {
    background-position: center;
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

.book-container {
    height: 0px;
    position: relative;
}

.btn-book {
    position: absolute;
    z-index: 1;
    font-size: 48px;
    user-select: none;
    top: 0px;
}

.btn-book:hover {
    cursor: pointer;
}

.btn-book-right {
    right: -35px;
}

.btn-book-left {
    left: -35px;
}