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Reddit: hide sidebar on comment pages

Collapses the right sidebar on comment pages so the discussion thread spans the full width.

Code to copy

/* Collapse the sidebar on comment pages so the thread takes the full width */
shreddit-app:has(shreddit-comment-tree) #right-sidebar-container {
  display: none !important;
}
shreddit-app:has(shreddit-comment-tree) .subgrid-container {
  grid-template-columns: minmax(0, 1fr) !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.