The timeline-trigger-activation-range shorthand sets the range during which the trigger activates. One value applies to start and end; two values set start then end. Accepts timeline-range names (entry, exit, cover, contain) as well..item {
timeline-trigger-activation-range: entry;
}.item {
timeline-trigger-activation-range: entry 25% exit 75%;
}min:0max:9999step:1units:% | px | em | remnormalDefault — the timeline's full span.coverRange of overlap between element and viewport.containRange during which the element is fully contained in the viewport.entryRange during which the element enters the viewport.exitRange during which the element exits the viewport.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
