HistorianGateway hand-rolled a .rail-btn override purely to make the rail-foot
sign-out button span the rail; its own comment flagged folding it into the kit.
Adds a composable modifier instead: class="rail-btn rail-btn-block".
Uses display:block + width:auto, NOT width:100%. The hand-rolled overrides set
width:100%, which resolves against the containing block and then adds .rail-btn's
0 0.6rem side margins on top, overflowing the rail by 1.2rem. width:auto fills
the same inset correctly.
Scope note: the app overrides that motivated this do more than full-width (they
also restyle font-size, padding, border, background and hover). Adopting the
modifier removes the width hack; whether to also drop the restyle is each app's
call, since it changes their rail appearance.
Version 0.3.1 -> 0.4.0 (additive). Build 0 errors, 48/48 tests, nupkg verified
to carry the new rule in staticwebassets/css/layout.css. Not yet published.
Joseph Doherty
5fc75d93fd