.block-hover:hover {
    filter: grayscale(0%) !important;
    transition: filter 0.5s ease-in-out;
}


body {
  --popup-text-font: Arial, sans-serif;
}

.t-feed-popup__descr, 
.t-feed-popup__title {
  font-family: var(--popup-text-font) !important;
}