body {
    height: auto !important;
    position: relative;
}

.de-fl-upScroll {
    padding: 0;
    margin: 0;
    position:fixed;
    cursor:pointer;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity 0.3s;
}

.de-fl-upScroll.isVisible {
    pointer-events: auto;
    opacity: 1;
    visibility: visible;
}