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Highlight looping videos

Marks every video element that has the loop attribute with a subtle border so looping clips are easy to spot.

Code to copy

/* Visually mark looping videos with a subtle accent border. */
video[loop] {
  outline: 2px solid rgba(0, 150, 80, 0.6);
  outline-offset: -2px;
}

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.