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Collapse long comment lists

Caps the height of expanded comments under posts and adds scrolling so the feed does not balloon endlessly.

Code to copy

.feed-shared-update-v2 .comments-comments-list,
.feed-shared-update-v2 .social-details-social-activity {
  max-height: 160px !important;
  overflow-y: auto !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.