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THE DAILY INDEX

Technology, AI, software, security, crypto and business

ARTICLES & TUTORIALS

TLDR Web Dev

LET'S BE SPECIFIC: CSS SPECIFICITY EXPLAINED

CSS specificity is an algorithm that browsers use to determine which CSS rules to apply when multiple rules target the same HTML element. The specificity is calculated using a three-column scoring system (ID-CLASS-TYPE) where ID selectors have the highest weight (1-0-0), followed by class selectors, attributes, and pseudo-classes (0-1-0), and finally type selectors and pseudo-elements (0-0-1). When comparing rules, browsers check the ID column first, then CLASS, then TYPE, and if all scores are equal, the rule that appears later in the CSS wins.

FRONTEND COMPLEXITY AND THE HTML RENAISSANCE

Frontend development has become unnecessarily complex, with developers building elaborate JavaScript component libraries to recreate basic HTML functionality that browsers already provide or are increasingly supporting natively. Simple HTML elements like `details` and `summary` can create fully functional accordions without JavaScript, while popular component libraries require hundreds of files and dependencies to achieve similar results.

CLOUDFLARE JUST GOT FASTER AND MORE SECURE, POWERED BY RUST

Cloudflare has rebuilt major components of its network system using Rust programming language, replacing its 15-year-old "FL" system with "FL2". This led to a 10ms reduction in median response time and a 25% performance boost. The new system, built on Cloudflare's Oxy framework, removes memory safety issues and data races that plagued the previous Nginx/LuaJIT-based system while providing better modularity.

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