The timeline-trigger-active-range shorthand sets the range during which the trigger remains in its active state (after activation). One value applies to start and end; two values set start then end..item {
timeline-trigger-active-range: exit;
}.item {
timeline-trigger-activation-range: entry;
timeline-trigger-active-range: contain 0% exit 100%;
}min:0max:9999step:1units:% | px | em | remautoDefault — matches the activation-range boundaries.normalThe timeline's full span.coverRange of overlap between element and viewport.containRange during which the element is fully contained.entryThe entry range.exitThe exit range.CSS Animation Triggers Module Level 1Editor's Draft<length-percentage>W3CEdit CSS onlineThe plugin that remembers hundreds of CSS items for youEvery CSS property — in a live demonstrationThe bilingual CSS referencedefinitionexamplessyntaxmodulespecificationvalue typessourcespreviousnext