Framer has five sizing modes, and picking the wrong one breaks your layout at every breakpoint. This video maps out Fixed, Relative, Fill, Fit Content, and Viewport, explaining exactly what each one measures against: the parent container, sibling elements, child content, or the browser window itself.
The detail worth staying for is the Fill mode explanation. Framer implements it using fr units, the same fractional unit system from CSS Grid, meaning space gets divided proportionally among siblings. That single concept explains behavior that trips up most Framer beginners who expect percentage-based logic instead.
If you are building anything responsive in Framer without a clear mental model of these five modes, you are guessing. Watch this to replace the guesswork with a decision rule for every layer you size.
[WATCH ON YOUTUBE →]