.pk-scroll-to-top
{
    --pk-scrolltop-background: #a0a0a0;
    --pk-scrolltop-icon-color: #fff;
    --pk-scrolltop-opacity: 1;
    --pk-scrolltop-opacity-hover: .7;
}
.pk-scroll-to-top
{
    background: var(--pk-scrolltop-background);
    display: none;
    position: fixed;
    left: -9999px;
    bottom: 2rem;
    opacity: 0;
    transition: opacity .25s;
}
.pk-scroll-to-top.pk-active
{
    opacity: var(--pk-scrolltop-opacity);
    left: auto;
    right: 2rem;
}
.pk-scroll-to-top:hover
{
    opacity: var(--pk-scrolltop-opacity-hover);
}
.pk-scroll-to-top .pk-icon
{
    display: block;
    padding: .6rem;
    color: var(--pk-scrolltop-icon-color);
    line-height: 1;
    transition: opacity .2s ease;
}
@media(min-width: 760px)
{
    .pk-scroll-to-top
    {
        display: block;
    }
}