The New CSS if() Function (No More JavaScript for This)

CSS just got real conditional logic, the new if() function lets you branch property values directly inside CSS, no JavaScript required. In this video, I build two live demos using if() with style() and supports() queries. We cover: ✅ How the if() function works (style(), supports() conditions) ✅ Building variant buttons that react live in DevTools, zero JS branching logic ✅ Using if() + supports() for safe color-space fallbacks ✅ The correct syntax gotchas (spacing, semicolons) ✅ Honest browser support status — where this actually works right now ⚠️ Heads up: if() currently only works in Chromium browsers (Chrome, Edge, Opera). Firefox and Safari haven't shipped it yet. I'll show you exactly how to use it without breaking anything for those visitors. This is pure CSS + vanilla JavaScript, no frameworks. Timestamps: 00:00 Intro: CSS has if-statements now 00:57 The Context: Why do we even need this? 02:20 Demo 1: Variant buttons with style() 09:12 Live DevTools reactivity test 09:52 Demo 2: supports() color fallback 11:24 Browser support 11:42 Wrap-up If you found this useful, a like helps the channel a lot, and subscribe if you want more videos like this on new CSS features as they land. #CSS #WebDevelopment #FrontendDevelopment