#todayTransitList.is-expanded,
#weeklyTransitDayPanel.is-open {
  overflow-y: auto !important;
  overflow-x: hidden !important;
  overscroll-behavior: none !important;
  overscroll-behavior-y: none !important;
  -ms-scroll-chaining: none;
  scrollbar-gutter: stable;
  overflow-anchor: none;
}

/* Prevent nested descendants from starting their own wheel chain. R34 JS owns
   the wheel delta and applies it only to the parent transit pane. */
#todayTransitList.is-expanded *,
#weeklyTransitDayPanel.is-open * {
  overscroll-behavior: none;
}

#todayTransitList[data-scroll-locked-r34],
#weeklyTransitDayPanel[data-scroll-locked-r34] {
  isolation: isolate;
}