--- title: FixCSS – Master.dev Blog | daily.dev description: The CSS Working Group has a well-known document listing historical design mistakes in CSS, such as box-sizing: border-box not being the default. Developer... canonical: https://daily.dev/posts/fixcss-master-dev-blog-5xggxmpy8 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: FixCSS – Master.dev Blog | daily.dev og:description: The CSS Working Group has a well-known document listing historical design mistakes in CSS, such as box-sizing: border-box not being the default. Developer... og:url: https://daily.dev/posts/fixcss-master-dev-blog-5xggxmpy8 og:image: https://api.daily.dev/og/posts/5xGgxMpY8.png og:image:alt: FixCSS – Master.dev Blog og:image:width: 1200 og:image:height: 630 og:locale: 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. # FixCSS – Master.dev Blog **[Frontend Masters](https://daily.dev/sources/frontendmasters)** · 1 min read · 12 upvotes · 2 comments ## Summary The CSS Working Group has a well-known document listing historical design mistakes in CSS, such as box-sizing: border-box not being the default. Developer Declan Chidlow created a novelty library called FixCSS that attempts to programmatically correct these historical CSS mistakes at runtime. While the author notes users shouldn't bear a runtime cost for these fixes, the project is described as a humorous but fully realized idea, and is hosted on Tangled. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is FixCSS and what does it do? FixCSS is a novelty JavaScript library created by Declan Chidlow that fixes historical CSS design mistakes at runtime, such as box-sizing not defaulting to border-box. These mistakes are documented in a CSS Working Group list of known design errors. Rather than baking fixes into a starter stylesheet, FixCSS applies them programmatically, though this adds a runtime cost users typically shouldn't need to pay. _Developers weighing CSS reset strategies can compare approaches like this one on daily.dev._ ## Community discussion Top comments from developers on daily.dev. **@neoscripter** · 1 upvotes > Isn't it called a reset css file? I've already had it in my projects for quite a while ## Similar posts on daily.dev - [CSS: Unavoidable Bad Parts](https://daily.dev/posts/css-unavoidable-bad-parts-ia9uwkcoo) · matklad · 15 upvotes · 0 comments - [How I Lost MadCSS – Frontend Masters Blog](https://daily.dev/posts/how-i-lost-madcss-frontend-masters-blog-pphmrhzaq) · Frontend Masters · 66 upvotes · 2 comments - [CSS-in-JS: The Great Betrayal of Frontend Sanity](https://daily.dev/posts/css-in-js-the-great-betrayal-of-frontend-sanity-yltrsmn2c) · The New Stack · 0 upvotes · 0 comments - [Issue \#634](https://daily.dev/posts/issue-634-bwn5rmtxl) · CSS Weekly · 5 upvotes · 0 comments --- Tags: [#css](https://daily.dev/tags/css) [View this post on daily.dev](https://daily.dev/posts/fixcss-master-dev-blog-5xggxmpy8) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"FixCSS – Master.dev Blog","url":"https://daily.dev/posts/fixcss-master-dev-blog-5xggxmpy8","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/fixcss-master-dev-blog-5xggxmpy8"},"datePublished":"2026-07-15T01:54:57.416Z","dateModified":"2026-09-14T08:31:42.789Z","description":"The CSS Working Group has a well-known document listing historical design mistakes in CSS, such as box-sizing: border-box not being the default. 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