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Mastodon: hide server banners

Hides admin announcement banners and informational notices that appear above the timeline.

Code to copy

/* Hide server announcements and dismissable banners at the top */
.dismissable-banner,
.announcements,
.announcements-list,
.notification__filter-bar + .dismissable-banner,
.column-header__back-button + .dismissable-banner {
  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.