Install
That writes one file:compositions/lt-mask-reveal.html.
Source
lt-mask-reveal.html
lt-mask-reveal.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>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
background: transparent;
overflow: hidden;
}
body {
width: 1920px;
height: 1080px;
font-family: "Montserrat", sans-serif;
}
#root .lt {
position: absolute;
left: 130px;
bottom: 122px;
display: flex;
flex-direction: column;
align-items: flex-start;
gap: 14px;
}
#root .lt-namewrap {
position: relative;
overflow: hidden;
padding: 2px 0;
}
#root .lt-name {
font-size: 72px;
font-weight: 900;
color: #ffffff;
line-height: 0.98;
letter-spacing: -0.02em;
white-space: nowrap;
text-shadow: 0 2px 22px rgba(0, 0, 0, 0.45);
will-change: clip-path;
}
#root .lt-sweep {
position: absolute;
top: 0;
bottom: 0;
left: 0;
width: 8px;
background: #ffd23f;
}
#root .lt-role {
font-size: 28px;
font-weight: 500;
color: #e7eaf0;
line-height: 1.2;
letter-spacing: 0.02em;
white-space: nowrap;
text-shadow: 0 2px 16px rgba(0, 0, 0, 0.45);
}
</style>
</head>
<body>
<div
id="root"
data-composition-id="lt-mask-reveal"
data-width="1920"
data-height="1080"
data-start="0"
data-duration="4.8"
>
<div id="lt-clip" class="clip" data-start="0" data-duration="4.8" data-track-index="0">
<div id="lt" class="lt">
<div class="lt-namewrap">
<div id="lt-name" class="lt-name">Dr. Maya Chen</div>
<div id="lt-sweep" class="lt-sweep"></div>
</div>
<div id="lt-role" class="lt-role">Host · Neuroscientist</div>
</div>
</div>
</div>
<script>
window.__timelines = window.__timelines || {};
var tl = gsap.timeline({ paused: true });
var wrap = document.getElementById("lt");
var nameEl = document.getElementById("lt-name");
var sweep = document.getElementById("lt-sweep");
var role = document.getElementById("lt-role");
// An accent sweep crosses left→right; the name is revealed by a clip-path wipe behind it; role fades up.
// Sweep travel: left:"100%" was parent-relative (offsetParent = .lt-namewrap). Since the sweep is
// only 8px wide, xPercent would travel just 8px, so translate by the container width in pixels instead.
// The .lt-namewrap shrink-wraps the name "Dr. Maya Chen" to 536px (no horizontal padding/border, so
// clientWidth == content width), which is exactly what left:"100%" resolved to.
var SWEEP_TRAVEL = 536;
gsap.set(nameEl, { clipPath: "inset(0 100% 0 0)" });
gsap.set(sweep, { x: 0, opacity: 0 });
gsap.set(role, { y: 14, opacity: 0 });
tl.to(sweep, { opacity: 1, duration: 0.12, ease: "none" }, 0.1);
tl.to(sweep, { x: SWEEP_TRAVEL, duration: 0.55, ease: "power2.inOut" }, 0.12);
tl.to(nameEl, { clipPath: "inset(0 0% 0 0)", duration: 0.5, ease: "power2.inOut" }, 0.16);
tl.to(sweep, { opacity: 0, duration: 0.15, ease: "none" }, 0.6);
tl.to(role, { y: 0, opacity: 1, duration: 0.5, ease: "power3.out" }, 0.55);
// Exit: name un-wipes, role fades, hard kill.
tl.to(role, { opacity: 0, duration: 0.3, ease: "power2.in" }, 4.25);
tl.to(nameEl, { clipPath: "inset(0 0 0 100%)", duration: 0.4, ease: "power2.in" }, 4.3);
tl.set(wrap, { visibility: "hidden" }, 4.75);
window.__timelines["lt-mask-reveal"] = tl;
</script>
</body>
</html>
Usage
After installing, add the block to your host composition:<div data-composition-id="lt-mask-reveal" data-composition-src="compositions/lt-mask-reveal.html" data-start="0" data-duration="4.8" data-track-index="1" data-width="1920" data-height="1080"></div>
lower-third overlay podcast interview bold.