Every glassmorphism snippet I've seen is backdrop-filter: blur() plus a white overlay. That's a blurred rectangle. Real glass bends what's behind it, hardest at the edge — and that part is missing everywhere. Built it for a production Angular app, pulled it out as a Claude Code plugin: https://github.com/stormaref/LiquidGlassSkill /plugin marketplace add stormaref/LiquidGlassSkill /plugin install liquid-glass@stormaref-skills The refraction: bake a displacement map into a canvas, wire up feImage → feDisplacementMap → feGaussianBlur , point the element at it with backdrop-filter: url(#filter) . Since it's a backdrop filter, the input is the live page behind the element — so it tracks scroll, theme and content changes with nothing to invalidate. Field ported from liquid-glass-js (MIT, credited), minus its html2canvas snapshot. Why it's a skill and not a gist — four rules, each of which fails as plausible-looking output: Glass needs a backdrop. Over a flat page it reads as a gray box, which sends you reaching for more blur — the exact move that kills it. The tint is colorless. Hue in the tint fights the hue coming through; the surface goes muddy. Children of a glass panel paint no surface. An opaque fill covers the refracted backdrop, which is the whole effect. You can't feature-query it. Safari parses backdrop-filter: url(#…) and paints nothing, so @supports says yes and your panel is blank. Gate on engine. The CSS is 200 lines. Knowing that #1 is why your glass looks nths of things looking subtly wrong. MIT. Happy to talk displacement math — the 128/255 ≠ 0.5 decly long to find.