Simple CSS Inserter by JM

Bring CSS in and out.

Available on Firefox for Android™

3 (1 review)

55 Users

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About this extension

Press the toolbar button to apply the CSS. You can switch at any time.

Only one CSS can be retained.

Manifest version 3
Firefox 128+

Features
- Top frame only
- Insert CSS on load

Rated 3 by 1 reviewer

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