.product-categories-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.product-categories-grid li {
  list-style: none;
  position: relative;
  overflow: hidden;
  width: calc(50% - 20px) !important;
}

.product-categories-grid li img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  filter: grayscale(100%);
}

.product-categories-grid li a {
  display: block;
  position: relative;
}

.product-categories-grid li a .woocommerce-loop-category__title {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 15px;
  color: #fff;
  font-size: 16px;
  background: rgba(0,0,0,0.4);
}