Web Standard HTML+CSS+JS 35年史 1991-2026。HTML 0.9 (1991 Tim Berners-Lee CERN・Web初・18 Tag)→HTML 2.0 (1995 RFC 1866)→HTML 3.2 (1997 W3C・Form/Table)→HTML 4.01 (1999 W3C・Frameset/Strict/Transitional)→XHTML 1.0 (2000 XML Strict)→XHTML 2.0 (2009廃止 失敗)→HTML5 (2014年10月28日 W3C+WHATWG・Living Standard 2019 W3C合意)・W3C World Wide Web Consortium (1994 MIT)・WHATWG Web Hypertext Application Technology Working Group (2004 Apple+Mozilla+Opera vs W3C XHTML)・CSS 1.0 (1996 W3C Hakon Wium Lie+Bert Bos)→CSS 2.1 (2011)→CSS 3 Modular (2011-現在 Multi Modules)・CSS Grid Layout (2017 全Browser)・CSS Flexbox (2017)・CSS @container (2023 Container Queries)・CSS Cascade Layers (2022 @layer)・CSS Color Module Level 4 (2024 OKLCH/Lab)・CSS Anchor Positioning (2024 Chrome)・CSS Nesting (2023 全Browser)・CSS Subgrid (2023 全Browser)・CSS @scope+@starting-style+View Transitions (2024-26)・JavaScript ECMAScript 1.0 (1997 ECMA-262)→ES3 (1999)→ES5 (2009 Strict)→ES6 ES2015 (2015 Class+Module+let/const+Promise+Arrow Function大変革)→ES2016+2017 async/await→ES2018-2024 各年小機能追加→ES2025+ES2026 Decorator+Pipeline Operator・TC39 ECMA Technical Committee 39・Babel Transpiler+TypeScript・Tailwind CSS+Bootstrap+Chakra UI+Radix UI・Sass/SCSS+PostCSS・Webpack→Vite→Bun→Turbopack・¥0 OSS。