This article is part of a series on CSS + SVG animations — the zero-JavaScript motion stack. Introduction Modern browsers have a powerful, underappreciated animation system built right in: SVG + CSS keyframes . No runtime, no bundler magic — just markup and styles that the browser hardware-accelerates automatically. In this article we'll explore Building an Animated SVG Icon System with CSS and look at practical, copy-paste examples you can drop into any React, Vue, or plain HTML project. Why SVG + CSS? SVG shapes live in the DOM. CSS already knows how to animate DOM elements with @keyframes . The browser's compositor thread handles the rest at a smooth 60 fps — and you ship zero extra bytes to your users.…