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.
Claude Opus 5
f938ee9880