.nb-sticky-promo {
    width: var(--nb-sticky-promo-width);
    height: var(--nb-sticky-promo-height);
    box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
    text-align: center;
    align-content: center;
    background-color: var(--nb-sticky-promo-bg);
    z-index: 99;
}

.nb-sticky-promo .nb-link{
    color: var(--nb-sticky-promo-color);
    position: relative;
}

.nb-sticky-promo .nb-link:after {
    content: '';
    width: 30px;
    position: absolute;
    bottom: -10%;
    left: 50%;
    transform: translateX(-50%);
    border-bottom: var(--nb-sticky-promo-border);
}

.nb-sticky-promo .nb-link:hover {
    color: var(--nb-sticky-promo-hover-color);
    text-decoration: var(--nb-sticky-promo-hover-text-decoration);
}