pixivfe/doc/known-quirks.md

Known quirks

User styles not working

Issue

User styles, such as those applied using the Stylus browser extension, may not work properly with PixivFE.

Cause

PixivFE implements a strict Content-Security-Policy (CSP) that prevents inline styles from being loaded.

Solution

If you're using the Stylus browser extension, follow these steps to enable user styles:

1. Open the Stylus extension options.
2. Go to the "Advanced" section.
3. Enable the option "Circumvent CSP 'style-src' via adoptedStyleSheets".

This setting allows Stylus to bypass the CSP restriction and apply user styles correctly.

For more information, refer to issue #1685 on the Stylus GitHub repository.