Channel
New articles about Front End development. JS, CSS, React, Vue, Angular and others! Russian tech blog: @five_a_m Admin: @jem_jem
Updated: 2026-09-07
Feature Detecting “Undetectable” CSS Features with @supports named-feature() In CSS you can feature detect support for things like selectors, properties + values, and at-rules usin…
Creating Web Widgets Using the Document Picture-in-Picture API The general idea is that we create a Document Picture-in-Picture window (DPIP window), and then we put HTML, CSS, and…
Your React app doesn’t need all that JavaScript Reduce React complexity using native browser features: :has() for dark mode, for accordions, the Popover API, scroll-snap carousels,…
Hover Proximity Using Modern CSS https://blog.master.dev/hover-proximity-using-modern-css/
The asteroid currently hitting frontend web development https://nolanlawson.com/2026/08/23/the-asteroid-currently-hitting-frontend-web-development/
Building a Mouse-Following Square Lens Effect with Three.js and GLSL A step-by-step tutorial on using Three.js and GLSL to create a mouse-following square lens effect with image di…
Multiple-column layout, rows, rules, and floats https://rachelandrew.co.uk/archives/2026/08/24/multiple-column-layout-rows-rules-and-floats/
Background Image Refraction in CSS https://blog.master.dev/background-image-refraction-in-css/
A head-to-head of how Backpack and Phantom advertise on Telegram — the Solana-rooted exchange-and-wallet versus the leading self-custody wallet, their creative and targeting differences, and what the Telegram Ads Spy archive reveals.
How advertisers reach Belgian audiences on Telegram — one of Europe's toughest gambling and ad-restriction regimes pushing operators offshore, a Dutch/French/German language split, and EU-regulated crypto and trading.
How advertisers reach Irish audiences on Telegram — an English-speaking EU member inside the UK-Ireland creative pool, a fintech and tech-HQ hub, EU-regulated crypto and forex, and offshore gambling under a tightening licensing regime.
How advertisers reach Korean audiences on Telegram — the real-name banking regime that pushes activity offshore, one of the world's most intense retail-crypto cultures, gaming and esports adjacency, and won-denominated payment friction.
Flags — the regions we asked our observer pool for while recording this ad in this channel. That is a label on our request, not a confirmed place of viewing: when no account is available in the requested country the pool silently substitutes another and does not say so. It is not the advertiser's targeting country either. We stopped requesting the region on {date}, so newer creatives carry no flags at all. The channel's main country (by its language) is highlighted in blue; regions under 5% are collapsed into +N.