.page-scroll-buttons button,
.page-scroll-buttons button:hover,
.page-scroll-buttons button:focus {
    position: fixed;
    z-index: 100;
    border: 0;
    border-radius: 4px;
    margin: 0;
    padding: 0;
    transition: opacity 0.2s linear;
    text-indent: -99999px;
    cursor: pointer;
    background-size: 100% 100%;
}

.page-scroll-buttons button.one-page-down {
    background-image: url('spsb-arrow-down.png');
}

.page-scroll-buttons button.one-page-up {
    background-image: url('spsb-arrow-up.png');
}

.page-scroll-buttons button.all-the-way-to-top {
    background-image: url('spsb-arrow-top.png');
}

.page-scroll-buttons button.not-functional {
    cursor: default;
}

.no-top .all-the-way-to-top {
    display: none;
}