Install
That writes one file:compositions/components/headline-slam.html.
Paste it into your composition
Opencompositions/components/headline-slam.html and copy what is inside into your own composition.
A component has no size or duration of its own. It takes both from the composition
you paste it into.
Variables
Every one of these has a default, so the piece works untouched. Set the ones you want to change on the element:| Variable | Default | Accepts | What it does |
|---|---|---|---|
text | Ship it today | string | Text displayed as the headline. |
accent_word_index | 1 | number | Zero-based word index to color. Out of range leaves the headline unaccented. |
accent | green | green, blue, violet | Color applied to the selected word. |
shadow | true | boolean | Drop shadow cast under the headline. On by default; set false for a flat matte look. |
data-variable-values on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:
<div
data-composition-id="headline-slam"
data-composition-src="compositions/components/headline-slam.html"
data-variable-values='{"text":"Ship it today","accent_word_index":1,"accent":"green","shadow":true}'
></div>
Source
headline-slam.html
headline-slam.html
<!doctype html>
<!--
headline-slam: HyperFrames video primitive
One headline scales down from 1.6 to rest with expo.out weight. Its landing
drives a deterministic three-frame stage shake, followed by a quiet drift
and a fast upward exit.
Variables:
text: headline copy
accent_word_index: zero-based word index to color, out of range colors none
accent: green, blue, or violet accent color
shadow: drop shadow under the headline, on by default
Envelope, fixed IN and OUT with elastic HOLD:
IN_BASE = 0.72s, headline slam and three-frame impact shake
HOLD = max(0, D - IN - OUT), one subtle drift cycle
OUT_BASE = 0.46s, headline whips upward out of frame
If D is shorter than IN_BASE + OUT_BASE, IN and OUT compress together.
The timeline is never time-scaled.
Mount contract: the runtime clones only this template. #root fills the host
box, establishes the container query basis, and has no data-width or
data-height. One paused timeline registers under the literal headline-slam
key.
-->
<html
lang="en"
data-composition-id="headline-slam"
data-composition-duration="3.5"
data-composition-variables='[
{ "id": "text", "type": "string", "role": "content", "label": "Headline", "description": "Text displayed as the headline.", "default": "Ship it today" },
{ "id": "accent_word_index", "type": "number", "role": "content", "label": "Accent word index", "description": "Zero-based word index to color. Out of range leaves the headline unaccented.", "default": 1, "step": 1 },
{ "id": "accent", "type": "enum", "role": "style", "label": "Accent", "description": "Color applied to the selected word.", "default": "green", "options": [{ "value": "green", "label": "Green" }, { "value": "blue", "label": "Blue" }, { "value": "violet", "label": "Violet" }] },
{ "id": "shadow", "type": "boolean", "role": "style", "label": "Shadow", "description": "Drop shadow cast under the headline. On by default; set false for a flat matte look.", "default": true }
]'
>
<head>
<meta charset="UTF-8" />
<title>Headline Slam</title>
</head>
<body>
<template>
<div id="root" data-composition-id="headline-slam" data-duration="3.5" data-fps="30">
<style>
*,
*::before,
*::after {
box-sizing: border-box;
}
#root {
position: absolute;
inset: 0;
overflow: hidden;
container-type: size;
isolation: isolate;
color: var(--fg, #f8fafc);
font-family: var(--font-display, Inter, system-ui, sans-serif);
pointer-events: none;
}
.hs-clip,
.hs-stage {
position: absolute;
inset: 0;
width: 100cqw;
height: 100cqh;
}
.hs-clip {
overflow: hidden;
}
.hs-stage {
display: grid;
place-items: center;
will-change: transform;
}
.hs-headline {
display: flex;
align-items: center;
justify-content: center;
gap: 2cqw;
width: 90cqw;
min-height: 22cqh;
color: var(--fg, #f8fafc);
font-size: var(--hs-font-size, 10.5cqw);
font-weight: 900;
line-height: 0.88;
letter-spacing: -0.5cqw;
text-align: center;
white-space: nowrap;
transform-origin: 50% 50%;
will-change: transform, opacity;
}
/* Shadow is on by default; the shadow variable opts out of it. */
.hs-headline.hs-shadow {
text-shadow: 0 1.2cqh 4.5cqh color-mix(in srgb, #000 52%, transparent);
}
.hs-word {
display: inline-block;
}
.hs-word-accent {
color: var(--hs-accent, #71f5a7);
}
</style>
<div
id="headline-slam-clip"
class="hs-clip clip"
data-start="0"
data-duration="3.5"
data-track-index="0"
>
<div class="hs-stage">
<div class="hs-headline" role="heading" aria-level="1"></div>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<script>
(function () {
"use strict";
var root = document.getElementById("root");
var stage = root.querySelector(".hs-stage");
var headline = root.querySelector(".hs-headline");
var vars =
window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: {};
var text = vars.text == null ? "Ship it today" : String(vars.text);
var indexValue = Number(vars.accent_word_index);
var accentWordIndex = Number.isFinite(indexValue) ? Math.trunc(indexValue) : 1;
var accentColors = {
green: "var(--brand, #71f5a7)",
blue: "var(--accent, #61a8ff)",
violet: "var(--accent-2, #b895ff)",
};
var accent = Object.prototype.hasOwnProperty.call(accentColors, vars.accent)
? vars.accent
: "green";
var shadow = !(vars.shadow === false || vars.shadow === "false");
var words = text.trim() === "" ? [] : text.trim().split(/\s+/);
root.style.setProperty("--hs-accent", accentColors[accent]);
headline.classList.toggle("hs-shadow", shadow);
headline.setAttribute("aria-label", text);
words.forEach(function (word, index) {
var span = document.createElement("span");
span.className = index === accentWordIndex ? "hs-word hs-word-accent" : "hs-word";
span.textContent = word;
span.setAttribute("aria-hidden", "true");
headline.appendChild(span);
});
// Deterministic fit from character count: DOM measurement is zero at
// mount time (the template is not laid out yet), so it never fires.
// 0.62 approximates the average glyph/em width of the bold face; the
// 56cqw rest-state cap keeps the 1.6x overshoot peak inside 90cqw.
var approxWidthCqw = text.length * 10.5 * 0.62;
if (approxWidthCqw > 56) {
var fitted = Math.max(3.5, 56 / (text.length * 0.62));
root.style.setProperty("--hs-font-size", fitted.toFixed(2) + "cqw");
}
var IN_BASE = 0.72;
var OUT_BASE = 0.46;
var LAND_AT_BASE = 0.58;
var SHAKE_FRAME_BASE = 1 / 30;
var duration = Math.max(0.001, parseFloat(root.dataset.duration || "3.5"));
var baseTotal = IN_BASE + OUT_BASE;
var envelopeScale = duration < baseTotal ? duration / baseTotal : 1;
var IN = IN_BASE * envelopeScale;
var OUT = OUT_BASE * envelopeScale;
var LAND_AT = LAND_AT_BASE * envelopeScale;
var SHAKE_FRAME = SHAKE_FRAME_BASE * envelopeScale;
var HOLD = Math.max(0, duration - IN - OUT);
var HOLD_START = IN;
var OUT_START = IN + HOLD;
var tl = gsap.timeline({ paused: true });
tl.fromTo(
headline,
{ scale: 1.6, opacity: 0, y: 0 },
{ scale: 1, opacity: 1, y: 0, duration: LAND_AT, ease: "expo.out" },
0,
);
tl.to(
stage,
{ x: "0.55cqw", y: "-0.3cqh", duration: SHAKE_FRAME, ease: "power2.out" },
LAND_AT,
);
tl.to(stage, {
x: "-0.38cqw",
y: "0.2cqh",
duration: SHAKE_FRAME,
ease: "power2.out",
});
tl.to(stage, { x: 0, y: 0, duration: SHAKE_FRAME, ease: "power2.out" });
if (HOLD > 0) {
tl.fromTo(
headline,
{ y: 0 },
{
y: "-0.55cqh",
duration: HOLD / 2,
ease: "sine.inOut",
yoyo: true,
repeat: 1,
immediateRender: false,
},
HOLD_START,
);
}
tl.to(headline, { y: "-120cqh", duration: OUT, ease: "power4.in" }, OUT_START);
tl.seek(0);
window.__timelines = window.__timelines || {};
window.__timelines["headline-slam"] = tl;
})();
</script>
</div>
</template>
</body>
</html>
motion-primitive typography headline slam impact exit.