QA · Joints
Where a theme section meets a standard block
This page exists for one measurement. A theme section runs edge to edge and brings its own vertical padding; a standard block sits in the content column and takes its spacing from the block gap. Where the two meet, either a double gap appears or the two edges fail to line up — and neither is visible anywhere else on the site, because nowhere else do the two kinds of block touch.
This paragraph is wide, so its left and right edges should sit exactly on the edges of the header above and the section below. Any difference at all is the number the audit reports as wideDelta, and the tolerance is one pixel.
A wide group with a surface. Because it has a background, its edges are visible, which makes it the easiest block on the page to compare against the theme sections above and below by eye as well as by measurement.
Above this paragraph is the theme’s own spacer block. It is a theme block, so the content column rule must not touch it and the rhythm rule must not add a gap on either side of it — otherwise the spacing it was set to no longer means anything.
A full-width image sits directly above. A full-bleed core block and a full-bleed theme section are the two things on this site that touch the viewport edge, and they must reach it identically — no stray margin on one and not the other.
And the last case: a core block immediately after a full-width separator, back inside the column. The rhythm between them comes from a single number in theme.json, read by the editor through its own layout mechanism and by the front end through one selector — if the two ever disagree, this is where it shows.