Infinite looped scrolling sections

let sections = gsap.utils.toArray("section"),
 currentSection = sections[0];

gsap.defaults({overwrite: 'auto', duration: 0.3});

// stretch out the body height according to however many sections there are. 
gsap.set("body", {height: (sections.length * 100) + "%"});

// create a ScrollTrigger for each section
sections.forEach((section, i) => {
 ScrollTrigger.create({
 // use dynamic scroll positions based on the window height (offset by half to make it feel natural)
 start: () => (i - 0.5) * innerHeight,
 end: () => (i + 0.5) * innerHeight,
 // when a new section activates (from either direction), set the section accordinglyl.
 onToggle: self => self.isActive && setSection(section)
 });
});

function setSection(newSection) {
 if (newSection !== currentSection) {
 gsap.to(currentSection, {scale: 0.8, autoAlpha: 0})
 gsap.to(newSection, {scale: 1, autoAlpha: 1});
 currentSection = newSection;
 }
}

// handles the infinite part, wrapping around at either end....
ScrollTrigger.create({
 start: 1,
 end: () => ScrollTrigger.maxScroll(window) - 1,
 onLeaveBack: self => self.scroll(ScrollTrigger.maxScroll(window) - 2),
 onLeave: self => self.scroll(2)
}).scroll(2);

/* StyleGallery host styles: independent replacement for unavailable shared Pen CSS. */
:root{--color-just-black:#111522;--color-surface-white:#f7f3ec;--color-surface75:#cfccc6;--color-surface50:#898e9f;--color-surface25:#414859;--color-shockingly-green:#95efd2;--color-lt-green:#b5f4da;--color-pink:#fbadce;--color-purple:#897dff;--color-lilac:#b5a1ff;--color-orangey:#ffd28c;--color-blue:#75d8ed;--color-ui-gradient:linear-gradient(135deg,#fbadce,#897dff);--color-ui-gradient-background:linear-gradient(135deg,#fbadce,#897dff);--color-text-gradient:linear-gradient(135deg,#fbadce,#897dff);--gradient-summer-fair:linear-gradient(135deg,#ffd28c,#fbadce);--gradient-lipstick:linear-gradient(135deg,#fbadce,#fc7f8e);--gradient-macha:linear-gradient(135deg,#b5f4da,#75d8ed);--color-grey:#898e9f;--color-grey-dark:#414859;--color-scroll-pink-lt:#fbadce;--color-text-purple:#b5a1ff;--surface50:#898e9f;--light:#f7f3ec;--dark:#111522;--mid:#898e9f}
*{box-sizing:border-box}body{background:#111522;color:#f7f3ec;font-family:system-ui,sans-serif;margin:0;min-height:100vh;width:100%}button,input{font:inherit}button,.button{background:#111522;border:1px solid #898e9f;border-radius:.55rem;color:#f7f3ec;cursor:pointer;padding:.65rem 1rem}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #95efd2;outline-offset:4px}h1,h2,h3,h4{line-height:1.15}h4{font-weight:500}code{font-family:ui-monospace,monospace}.heading-l{font-size:clamp(2rem,6vw,5rem)}.heading-text{font-size:clamp(1.5rem,4vw,3rem)}.box{background:#95efd2;border-radius:14px;height:clamp(38px,12vw,80px);width:clamp(38px,12vw,80px)}.green{background:#95efd2}.purple{background:#897dff}.orange{background:#ffd28c}.gradient-pink{background:linear-gradient(140deg,#fbadce,#fc7f8e)}.gradient-purple{background:linear-gradient(140deg,#b5a1ff,#537ff7)}.center{align-items:center;display:flex;justify-content:center}.text-center{text-align:center}.panel{min-height:100vh;width:100%}.flair:not(img){background-image:url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDgiIGhlaWdodD0iMjQ4IiB2aWV3Qm94PSIwIDAgMjQ4IDI0OCI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJnIiB4Mj0iMSIgeTI9IjEiPjxzdG9wIHN0b3AtY29sb3I9IiNiNWExZmYiLz48c3RvcCBvZmZzZXQ9IjEiIHN0b3AtY29sb3I9IiM3NWQ4ZWQiLz48L2xpbmVhckdyYWRpZW50PjwvZGVmcz48ZyBmaWxsPSJ1cmwoI2cpIj48cGF0aCBkPSJNODcgMjBoNzR2NjdoNjd2NzRoLTY3djY3SDg3di02N0gyMFY4N2g2N1oiLz48L2c+PC9zdmc+");background-position:center;background-repeat:no-repeat;background-size:contain;height:80px;width:80px}.flair--3:not(img){background-image:url("data:image/svg+xml;base64,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")}.braces{font-size:1rem}img{max-width:100%}
/* External font programs are omitted; preserve readable fallback typography. */
body,button,input,h1,h2,h3,h4,p,span,div{font-family:inherit}body{font-family:system-ui,sans-serif}code,pre{font-family:ui-monospace,monospace}

/* Locally authored presentation for panels whose shared stylesheet was not acquired. */
.panel{align-items:center;display:flex;flex-direction:column;justify-content:center;padding:2rem;text-align:center}.panel__number{font-size:clamp(6rem,25vw,16rem);font-weight:700}.blue{background:#537ff7}.panel h1{font-size:clamp(2rem,6vw,4rem)}

window.__STYLEGALLERY_ASSETS__={};
let sections = gsap.utils.toArray("section"), currentSection = sections[0];
gsap.defaults({ overwrite: "auto", duration: 0.3 });
gsap.set("body", { height: sections.length * 100 + "%" });
sections.forEach((section, i) => {
  ScrollTrigger.create({
    // use dynamic scroll positions based on the window height (offset by half to make it feel natural)
    start: () => (i - 0.5) * innerHeight,
    end: () => (i + 0.5) * innerHeight,
    // when a new section activates (from either direction), set the section accordinglyl.
    onToggle: (self) => self.isActive && setSection(section)
  });
});
function setSection(newSection) {
  if (newSection !== currentSection) {
    gsap.to(currentSection, { scale: 0.8, autoAlpha: 0 });
    gsap.to(newSection, { scale: 1, autoAlpha: 1 });
    currentSection = newSection;
  }
}
ScrollTrigger.create({
  start: 1,
  end: () => ScrollTrigger.maxScroll(window) - 1,
  onLeaveBack: (self) => self.scroll(ScrollTrigger.maxScroll(window) - 2),
  onLeave: (self) => self.scroll(2)
}).scroll(2);

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GSAP 3.15.0
Copyright 2026, GreenSock. All rights reserved.
Subject to the Standard No Charge License: https://gsap.com/standard-license.
The full notice in each original GSAP library file is preserved.


StyleGallery host adapter and replacement SVG subjects: locally authored.