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Slack: dim bot messages

Dims messages posted by bots and apps so conversations between people stand out more.

Code to copy

/* Dim messages posted by bots and apps so human chat stands out */
.c-message_kit__background:has(.c-app_badge),
.c-message_kit__background:has([data-qa="bot_message_badge"]) {
  opacity: 0.6 !important;
}
.c-message_kit__background:has(.c-app_badge):hover {
  opacity: 1 !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.