Pro usar iste additivos, tu debera discargar Firefox.

Aperir session
Icone del additivo

Recensiones de OS style Close Window Button

OS style Close Window Button per Usator de Firefox 12528072

4,1 Stellas de 5
5
5
4
0
3
1
2
0
1
1
Responsa per Usator de Firefox 12528072

Responsa de disveloppator

publicate 7 år sidan
linux 还是windows?
https://cup.aihedy.com/zh-CN/firefox/addon/hide-title-bar/