WCAG 2.1 SC 1.4.10 asks for no two-dimensional scrolling down to 320px, which is also what 400% zoom on a 1280px screen produces. The layout skeleton was already hardened for this in #165; the overflow came from content inside the sections. - The sessions table cannot shrink below its min-content width — four columns, one of them the full user-agent string. It now scrolls inside its own container rather than pushing the page. The container is focusable with a role and a name, because a scroll area that only a mouse can reach trades one barrier for another. - `.settings-checkbox` rows may wrap. The accent swatches have a fixed size and cannot shrink, so an unwrappable row set a floor for the whole page width. Adds a reflow guard to the a11y pack. axe does not cover 1.4.10 — the criterion is not derivable from the DOM — so this is a separate check, and it names the overflowing elements when it trips instead of only reporting that something overflows. |
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