#OpaCity

calc(100vw / 1px) now returns a plain number. Firefox 158 made CSS typed arithmetic Baseline Newly available in October 2026.

For over 10 years, transitioning elements from display: none was considered impossible in pure CSS...

I recently built a simple Traffic Lights project using HTML, CSS, and JavaScript. This mini project...

Image-to-3D models are good now. You give Idol one picture of a toy fox, and about a minute later you...

The portfolio's production HTML shipped with opacity:0 across 129 tags — the hero, the cards and half the page came to life only after hydration. The framer-motion pattern behind it, the first time it

Mastering the Top Layer: Styling Native Dialogs and Popovers Like a Pro Hey there! Grab a coffee,...

From Dev.to - tutorial: How to Add a Text Watermark to Every Page of a PDF — Free, No Upload, Custom Opacity

SVG is one of those web technologies that’s both elegant and, at times, infuriating. In this article, pioneering author and web designer Andy Clarke explains his technique for animating SVG elements that are hidden in the Shadow DOM.