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Outlook: hide the Office app rail

Removes the slim left rail holding icons for the other Office suite apps.

Code to copy

/* Hide the far-left Office app rail (Mail, Calendar, People icons stay slim) */
div[data-app-section="AppRail"],
div[role="navigation"][aria-label="App bar"],
div[aria-label="Pasek aplikacji"] {
  display: none !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.