Stacking Cards

Create a stacking cards scroll section. A vertical sequence of full-width cards where each card sticks to the top of the viewport as you scroll, and the next card slides up over it, forming a growing stack. Implementation: each card gets position: sticky with top: N * 16px (N = card index), so every card rests slightly lower than the previous one and the stacked headers stay visible. The parent section must be tall enough to scroll through all cards (roughly cards-count times viewport height section). Give each card a solid opaque background, border-radius 16-20px, a subtle upward shadow (0 -8px 24px at ~6% black) so the incoming card reads as covering the previous one, and generous padding. Optional depth cue: as a card gets covered, scale it down to 0.97 using a scroll-linked effect. Keep every card's content readable when only its top strip is visible, and avoid sticky stacking entirely on screens shorter than 600px (fall back to normal stacked layout). Build the component, not this demo of it. - Ambient motion that IS the component may loop: a drifting background, a marquee, a spinner while something is genuinely loading. - Do not add any timer, interval, loop or script that performs a person's action by itself. No auto-hover, no auto-click, no cycling through states, no pretend submitting, no replaying the interaction on a schedule. - Every state that answers a person waits for a real event from that person. - Placeholder copy and sample content are welcome. Simulated behaviour is not.