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Inject Stylus into shadowRoots

inject styles of stylus-addon in shadowRoot

Author
hdyzen
Daily installs
0
Total installs
0
Ratings
0 0 0
Version
1.1
Created
2025-06-29
Updated
2025-07-25
Size
1.65 KB
License
GPL-3.0-only
Applies to
All sites

Inject Stylus into shadowRoots

This userscript injects styles from the Stylus extension directly into shadowRoot instances, allowing you to style the content of web components.

How to style content inside a shadowRoot

:host

To apply styles only to the content within a shadowRoot, use the :host pseudo-selector in your Stylus styles. :host refers to the element that contains the shadowRoot (the shadow host).

/* All elements */
* {
  border: 1px violet;
}
/* Only elements inside the shadowRoot */
:host * {
  border: 1px solid mediumpurple;
}

Similar forms: