--- title: "Writing even more CSS with Accessibility in Mind, Part 1: Progressive Enhancement" url: https://daily.dev/posts/writing-even-more-css-with-accessibility-in-mind-part-1-progressive-enhancement-outcy15ax source_url: https://www.matuzo.at/blog/writing-even-more-css-with-accessibility-in-mind-progressive-enhancement type: article source: "Manuel Matuzović" published: 2026-06-22T14:42:53.042Z updated: 2026-06-22T14:45:07.750Z tags: ["javascript", "css", "accessibility"] reading_time: 12 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Writing even more CSS with Accessibility in Mind, Part 1: Progressive Enhancement **[Manuel Matuzović](https://daily.dev/sources/matuzo)** · 12 min read · 0 upvotes · 0 comments ## Summary A deep dive into progressive enhancement as a CSS and web development principle, covering how to build websites layer by layer (HTML → CSS → JS) for better accessibility and browser compatibility. Topics include CSS error handling as a built-in progressive enhancement mechanism, using @supports feature queries to serve modern CSS only to capable browsers, and a JS module-based technique to detect modern browsers and conditionally apply enhanced components like accordions. Practical code examples illustrate each concept, including toggle switches, CSS Grid with flexbox fallbacks, shape-outside, and accessible accordion patterns. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#javascript](https://daily.dev/tags/javascript), [#css](https://daily.dev/tags/css), [#accessibility](https://daily.dev/tags/accessibility) [View this post on daily.dev](https://daily.dev/posts/writing-even-more-css-with-accessibility-in-mind-part-1-progressive-enhancement-outcy15ax)