To use these add-ons, you'll need to download Firefox.

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Iceggiren i Hide Fixed Elements

Hide Fixed Elements sɣur Andrew F

4,1 n yitran ɣef 5
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Tiririt sɣur Andrew F

Tiririt n ineflayen

yeffeɣ-d deg 2 ani în urmă
It's in the addon description - https://github.com/andfarm/HideFixedElements. I don't have a device running Mobile Firefox but I'd happily accept a patch if you've tested it.