wiki/FAQ: Mention Firefox 1 px border

YaLTeR · YaLTeR · commit efbe29f3faa6 · 2025-11-23T11:39:45.000+03:00
diff --git a/docs/wiki/FAQ.md b/docs/wiki/FAQ.md
@@ -142,3 +142,8 @@ profile {
 	output eDP-1 enable scale 1.25 position 1920,0
 }
 ```
+
+### Why does Firefox or Thunderbird have 1 px smaller border?
+
+They draw their own 1 px dark border around the window, which obscures one pixel of niri's border.
+If you don't like this, set the [`clip-to-geometry true` window rule](./Configuration:-Window-Rules.md#clip-to-geometry).

Original file line number	Diff line number	Diff line change
`@@ -142,3 +142,8 @@ profile {`
`142`	`142`	`output eDP-1 enable scale 1.25 position 1920,0`
`143`	`143`	`}`
`144`	`144`	```
	`145`	`+`
	`146`	`+### Why does Firefox or Thunderbird have 1 px smaller border?`
	`147`	`+`
	`148`	`+They draw their own 1 px dark border around the window, which obscures one pixel of niri's border.`
	`149`	+If you don't like this, set the [`clip-to-geometry true` window rule](./Configuration:-Window-Rules.md#clip-to-geometry).