Sidebar and tab indicator

Click a sidebar item or a tab: one box slides, nothing repaints. Under prefers-reduced-motion: reduce the motion is removed and the end state shows at once.

Tabs: use Left/Right, Home and End to select a section.

Overview of the loan record.

Image previews

Static posters are shown first. Play starts an animated image; Pause restores its poster. Reduced motion keeps posters visible.