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Netflix: grayscale box art until hover

Shows the title box art in grayscale and restores full color only when you hover a card.

Code to copy

/* Desaturate box art until you hover over a card */
.title-card .boxart-image,
.title-card img {
  filter: grayscale(100%) !important;
  transition: filter 0.25s ease;
}
.title-card:hover .boxart-image,
.title-card:hover img {
  filter: grayscale(0%) !important;
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's CSS panel and save — the effect appears instantly.