content-visibility skips the contents
Level 7 of 9Your goal
Collapse .box to 0px tall by skipping its contents with content-visibility. height is not allowed.
Must use
content-visibilityNot allowed
heightmin-heightmax-heighttarget content boxtarget outer edge (green = matched, red = not yet)
Feedback updates as you type, and your CSS is saved in this browser. Exact target numbers are in the Target panel.