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Substack: hide the "new post" reminder banner

Hides the top reminder bar announcing a new post from the author so it does not break your reading.

Code to copy

/* Hide the "Author has a new post!" reminder banner at the top */
.new-post-banner,
.post-notification-banner,
[class*="newPostBanner"],
[class*="notificationBanner"],
[class*="topAnnouncement"],
div[role="alert"][class*="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.