Files
hyperframes/docs/catalog/blocks/mk-background.mdx
miga-heygenandMiguel Ángel 7b5fdb1ad2 fix(docs): emit catalog source accordion titles as plain strings (#4006)
The generated catalog pages rendered the "Source" accordion title as a
JSX expression, `<Accordion title={`name.html`}>`. Mintlify's search
indexer stringifies expression attribute nodes rather than evaluating
them, so every one of the 399 catalog pages surfaced its Source section
in search results as "[object Object]" (visible on the Scroll Feed page,
among others).

The template literal carried no escaping benefit: every title is a
single-segment `name.html` path, and a double-quoted JSX string handles
it directly. Introduce `mdxStringAttribute`, which emits a plain
`name="value"` attribute and escapes `& " < { }` as HTML character
references (MDX decodes references inside quoted attribute values, and
unlike JSON.stringify it does not rely on backslash escapes, which JSX
strings do not honour). Use it for both the Source accordion title and
the preview iframe title, and regenerate the catalog pages.

Regenerated with `npx tsx scripts/generate-catalog-pages.ts`; the only
change across the 399 pages is the one Accordion title line each.

Co-authored-by: Miguel Ángel <miguel.sierra@heygen.com>
2026-09-16 11:55:00 -04:00

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---
title: "Minimal Gradient Background"
description: "Procedural soft-blob gradient backdrop in a minimalist presentation style: two radial blobs drifting over a base color, with an animatable rounded-card bar mask and optional frosted-glass mode"
---
import { InstallCommand } from "/snippets/install-command.jsx";
## Install
<InstallCommand command="npx hyperframes add mk-background" item="mk-background" />
That writes one file: `compositions/mk-background.html`.
<iframe
className="w-full aspect-video rounded-xl border-0 bg-zinc-100 dark:bg-zinc-800"
title="mk-background preview"
loading="lazy"
srcDoc={`<!doctype html><html><head><meta charset="utf-8"><style>html,body{margin:0;height:100%;overflow:hidden;background:transparent}hyperframes-player{display:block;width:100%;height:100%}</style><script src="https://cdn.jsdelivr.net/npm/@hyperframes/player@latest/dist/hyperframes-player.global.js"><\/script></head><body><script>fetch("/public/catalog/blocks/mk-background.json").then(function(r){return r.json()}).then(function(d){var p=document.createElement("hyperframes-player");p.setAttribute("srcdoc",d.html);p.setAttribute("controls","");p.setAttribute("autoplay","");p.setAttribute("loop","");p.setAttribute("muted","");p.setAttribute("poster","https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/mk-background.png");document.body.appendChild(p)});<\/script></body></html>`}
/>
## Add it to your video
It runs for 10 seconds at 1920×1080. Paste this into your composition:
```html index.html
<div
data-composition-id="mk-background"
data-composition-src="compositions/mk-background.html"
data-start="0"
data-duration="10"
data-track-index="1"
data-width="1920"
data-height="1080"
></div>
```
Move it in time with `data-start`. Put it on a different timeline row with
`data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.
## Source
<Accordion title="mk-background.html">
```html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<style>
*,
*::before,
*::after {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background: transparent;
overflow: hidden;
}
#mk-bg-root {
/* ---- mk tokens: override these in the host to re-skin the family ---- */
--mk-font: "Inter", -apple-system, sans-serif;
--mk-stage: #f5f5f7;
--mk-base: #ffffff;
--mk-blob-1: #ff7ac8;
--mk-blob-2: #45d6c8;
--mk-stage-dark: #000000;
--mk-base-dark: #0a0a0c;
--mk-blob-1-dark: #7d5cff;
--mk-blob-2-dark: #2d1b69;
--mk-radius-card: 40px;
--mk-shadow: 0 30px 80px rgba(0, 0, 0, 0.18);
position: relative;
width: 1920px;
height: 1080px;
overflow: hidden;
background: var(--mk-stage);
}
#mk-bg-root.mk-dark {
background: var(--mk-stage-dark);
}
/* The "Bar" — an animatable rounded-rect mask. Full-bleed by default,
animatable down to a floating card over the stage. */
#mk-bg-card {
position: absolute;
top: 0;
left: 0;
width: 1920px;
height: 1080px;
overflow: hidden;
border-radius: 0;
background: var(--mk-base);
box-shadow: var(--mk-shadow);
}
.mk-dark #mk-bg-card {
background: var(--mk-base-dark);
}
/* Soft radial blobs — the procedural "mesh gradient". Two oversized
radial gradients with a long falloff, drifting slowly. */
.mk-bg-blob {
position: absolute;
border-radius: 50%;
will-change: transform;
}
#mk-bg-blob1 {
background: radial-gradient(
circle closest-side,
var(--mk-blob-1) 0%,
rgba(255, 255, 255, 0) 72%
);
}
#mk-bg-blob2 {
background: radial-gradient(
circle closest-side,
var(--mk-blob-2) 0%,
rgba(255, 255, 255, 0) 72%
);
}
.mk-dark #mk-bg-blob1 {
background: radial-gradient(
circle closest-side,
var(--mk-blob-1-dark) 0%,
rgba(0, 0, 0, 0) 72%
);
}
.mk-dark #mk-bg-blob2 {
background: radial-gradient(
circle closest-side,
var(--mk-blob-2-dark) 0%,
rgba(0, 0, 0, 0) 72%
);
}
</style>
</head>
<body>
<div
id="mk-bg-root"
data-composition-id="mk-background"
data-start="0"
data-duration="10"
data-width="1920"
data-height="1080"
>
<div id="mk-bg-card">
<div id="mk-bg-blob1" class="mk-bg-blob" data-layout-allow-overflow></div>
<div id="mk-bg-blob2" class="mk-bg-blob" data-layout-allow-overflow></div>
</div>
<div
id="mk-bg-drv"
class="clip"
data-start="0"
data-duration="10"
data-track-index="0"
style="position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none"
></div>
</div>
<script>
(function () {
window.__timelines = window.__timelines || {};
/* ---- published parameters (inspector-style CONFIG) ---- */
var CONFIG = {
scheme: "light", // "light" | "dark"
animationIn: true, // fade/settle entrance
animationOut: true, // fade exit
drift: true, // ambient blob motion
// Soft BG blobs: center as fraction of canvas, radius in px
blob1: { x: 0.28, y: 0.32, r: 950, opacity: 0.85 },
blob2: { x: 0.74, y: 0.66, r: 1100, opacity: 0.8 },
// Bar mask (rounded-rect card). demo:true plays full-bleed -> card -> full-bleed
bar: {
demo: true, // full-bleed -> rounded card -> full-bleed showcase
x: 240,
y: 140,
width: 1440,
height: 800,
roundness: 40,
},
// Content opacity + frost only matter with footage beneath the block
contentOpacity: 1,
frostBlur: 0, // px; e.g. 24 for the frosted-card look over footage
};
var W = 1920,
H = 1080,
DUR = 10;
var root = document.getElementById("mk-bg-root");
var card = document.getElementById("mk-bg-card");
var blob1 = document.getElementById("mk-bg-blob1");
var blob2 = document.getElementById("mk-bg-blob2");
if (CONFIG.scheme === "dark") root.classList.add("mk-dark");
function placeBlob(el, b) {
var d = b.r * 2;
el.style.width = d + "px";
el.style.height = d + "px";
el.style.left = b.x * W - b.r + "px";
el.style.top = b.y * H - b.r + "px";
el.style.opacity = String(b.opacity);
}
placeBlob(blob1, CONFIG.blob1);
placeBlob(blob2, CONFIG.blob2);
card.style.opacity = String(CONFIG.contentOpacity);
if (CONFIG.frostBlur > 0) {
card.style.backdropFilter = "blur(" + CONFIG.frostBlur + "px) saturate(1.4)";
}
var tl = gsap.timeline({ paused: true });
/* entrance — fade + blobs settle (power3, no bounce) */
if (CONFIG.animationIn) {
tl.from(root, { opacity: 0, duration: 0.7, ease: "power2.out" }, 0);
tl.from([blob1, blob2], { scale: 1.14, duration: 1.2, ease: "power3.out" }, 0);
}
/* ambient drift — slow sine yoyo, seek-safe timeline tweens */
if (CONFIG.drift) {
tl.to(
blob1,
{ x: 70, y: 42, duration: 2.35, ease: "sine.inOut", yoyo: true, repeat: 3 },
0.3,
);
tl.to(
blob2,
{ x: -84, y: -36, duration: 2.35, ease: "sine.inOut", yoyo: true, repeat: 3 },
0.3,
);
}
/* bar-mask demo: full-bleed -> rounded card over the stage -> full-bleed.
Offset via x/y transforms, not top/left: layout properties snap to
integer device pixels and stutter under seek-by-frame capture. The
card's CSS base is top:0/left:0, so the transform values match 1:1. */
if (CONFIG.bar.demo) {
tl.to(
card,
{
y: CONFIG.bar.y,
x: CONFIG.bar.x,
width: CONFIG.bar.width,
height: CONFIG.bar.height,
borderRadius: CONFIG.bar.roundness,
duration: 1.1,
ease: "power3.inOut",
},
3.8,
);
tl.to(
card,
{
y: 0,
x: 0,
width: W,
height: H,
borderRadius: 0,
duration: 1.0,
ease: "power3.inOut",
},
7.6,
);
}
/* exit + hard kill */
if (CONFIG.animationOut) {
tl.to(root, { opacity: 0, duration: 0.4, ease: "power2.in" }, DUR - 0.45);
}
tl.set(root, { visibility: "hidden" }, DUR - 0.02);
window.__timelines["mk-background"] = tl;
})();
</script>
</body>
</html>
```
</Accordion>
{/* hf:generated-footer */}
Tagged `background` `gradient` `minimal` `professional` `presentation`.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)