@media (max-width: 850px) {
  .site-footer {
    width: 100% !important;
    max-width: 100% !important;
  }

  .sp-ad-card,
  .sp-ad-card .ad-product-unit,
  .sp-ad-card .ad-image-slot {
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .sp-ad-card .ad-image-slot a {
    display: block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}