Most of this page is ordinary HTML — paragraphs, a list, a
blockquote, an image, some code. None of it sits inside a
.foldpage wrapper, so none of it is touched by the 3D pipeline.
It renders and scrolls exactly like any other web page.
The title above is different. It's wrapped in its own
standalone <div class="foldpage"> — nothing else lives
inside it — and the <h1> itself carries the
data-foldpage-depth attribute (the depth value must sit on
the text element being rendered, not on the wrapper). Fold finds the
wrapper, hides the flat DOM heading, and renders an extruded 3D text
mesh in its place, layered forward toward the camera along the Z axis.
.foldpage wrappers
on a single page — it isn't all-or-nothing. Each wrapper is processed on its
own and contains only what you want in 3D, so you can opt a handful of
titles into the scene while every surrounding paragraph, list, and image
stays plain, fast, ordinary HTML.
<div class="foldpage"> <h1 data-foldpage-depth="90">Mixed Usage</h1> </div> <p>Just a regular, unprocessed paragraph.</p>
A fully 3D page is a strong statement, but it isn't always what a piece of content calls for. Long-form writing, documentation, and articles usually want to stay readable, scrollable, and cheap to render — while still getting a moment of spatial polish where it counts most: the headline.
If Fold never initializes, this page shows nothing but a normal heading and
normal paragraphs — the .foldpage wrapper carries no visual
styling of its own.
data-foldpage-depth takes a pixel value. On a heading with no
CSS background and no CSS text-shadow — true of
every title on this page — Fold has nothing else to extrude, so it
synthesizes stacked text layers along Z instead, using the depth value to
set how far forward the title bulges toward the viewer.
Compare the three depths on this page: the H1 title at the
top uses data-foldpage-depth="90", "Why mix the two" uses
data-foldpage-depth="40", and this heading uses
data-foldpage-depth="65". Higher values push further out of
the page.
Everything below this line, including the footer navigation, is once again plain HTML with no Fold.page involvement at all.