// the find
hakimel/Avgrund
A JS/CSS3 modal UI concept
A CSS3 modal effect that scales and blurs the background page to create a sense of depth when a modal opens. It's a visual UI experiment from 2012–2013 by the creator of reveal.js. Not a production library — a concept demo.
The depth illusion effect is still visually distinctive and holds up as a design idea. The implementation is minimal — one CSS file, one JS file, no dependencies. MIT licensed with no strings attached.
Abandoned since 2019 and effectively unmaintained since ~2013. No accessibility support — no focus trap, no keyboard handling, no aria attributes. The CSS transform/blur approach predates modern dialog semantics entirely; you'd be fighting the browser's native <dialog> element to use this. At 1.6k stars, the GitHub presence is pure nostalgia traffic — nobody is shipping this in a new project.