Eventually we need to add support for supports-landscape to support landscape orientation and a full bleed desktop experience. There have been user requests for this already too.

Many things need to be considered for landscape support:

• Assets handling (Guide users to not use heavy assets when creating stories #2332)
• Landscape mode while editing
• Landscape preview for templates (?)
• Calculation of block position for portrait and landscape (that's gonna be fun)
• Poster image support