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Outlook: quiet the system folders

Dims system folders like Junk and Archive so your own custom folders stand out in the tree.

Code to copy

/* Dim system folders so custom user folders stand out in the tree */
div[role="tree"] div[role="treeitem"][title="Junk Email"],
div[role="tree"] div[role="treeitem"][title="Wiadomości-śmieci"],
div[role="tree"] div[role="treeitem"][title="Archive"],
div[role="tree"] div[role="treeitem"][title="Deleted Items"] {
  opacity: 0.55 !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.