.promo,
.label.--promo {
    background: #000000 !important;
    color: transparent !important;  
    position: relative;
}

/* nowy napis: BLACK WEEK */
.promo::after,
.label.--promo::after {
    content: "BLACK WEEK";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;       
    font-weight: inherit; 
    font-size: inherit;   
    pointer-events: none;
}