Left-aligned device mode viewport

[JunwayGuo]

I really need a feature like that in firefox.
“Left-align Viewport”
This allows the view of the reactive design tool to be shown on the far left.
You can get extra space on the right to show off key content, like the IOS emulator

This is very useful in a portrait monitor environment.

AB#44742337

[captainbrosset]

Thank for your request. Let me make sure it's tracked by the team for evaluation/prioritization.