Custom CSS ignored on many websites
Custom CSS rules are ignored on many websites, including ones that used to work.
Tier II · Emerging Problems that are still building up.
3 public reports · first reported 6 November 2020 · last reported 9 February 2026
What's going wrong
Users of this CSS add-on report that the custom styles they write are often ignored on websites.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 3 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.