Understanding Aspect Ratios in CSS and Canvas: Formulas, Responsive Rules, and Image Cropping
When building responsive image galleries, hero sections, or interactive media canvases, aspect ratio mismatches are among the common causes of Cumul…
DevOps
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Stop exporting JSON tokens and use CSS variables instead
A designer tagged me in a Figma comment on Tuesday morning. They wanted to know if we could start exporting our brand tokens as deeply nested JSON f…
How to Improve Blogger Website Performance with Practical HTML and CSS Optimizations
How to Improve Blogger Website Performance with Practical HTML and CSS Optimizations A Blogger website can look beautiful and still perform poorly o…
From BEM to BE.M — A CSS Naming Convention Built for Component Libraries
Originally published on LinkedIn . I'm gradually migrating my LinkedIn articles over to DEV — this is the first one. BEM was designed for page-level…
The iPhone Duo Web Checklist: 9 Things to Verify Before October 23
In September, a post titled "Dear God websites look horrible on iPhone Duo" climbed to the top of r/webdev. Two screenshots and one complaint: with…
CSS Flexbox
What Is CSS Flexbox? Flexbox stands for Flexible Box Layout . It is used to arrange elements in a row or column and control their alignment and spac…
5 Framer Motion patterns I used building 5 React templates (with code)
Over the last few weeks I built five website templates in React 18, Vite 5 and Framer Motion 11 — fashion, restaurant, SaaS, agency and wedding. No…
Theming a Drop-In UI Kit Without Forcing a Fork
Theming a Drop-In UI Kit Without Forcing a Fork Every prebuilt UI component library eventually meets a design system it was not built for. At that p…
Your webhook handler was slow, so Shopify sent it again
The server reboots at two on a Saturday morning for a security update, which is what it's supposed to do. The app doesn't come back, because nobody…
How I turn any handful of colours into a readable theme
Open the theme picker, choose Flatland from the base16 list, and the cards on the page lose their edges. Text and links are fine, but every border a…
The Case of the Missing `rem`: A Sherlock Holmes Guide to CSS Units in JavaScript
Being the record of an investigation into CSS units, JavaScript geometry, and a very small missing value — as written by Dr. Watson. A Matter of No…
We audited every new page at 320px, and the console snippet that should have run first
CogniPrep has been shipping a long content release: 28 assessment providers' worth of practice tests, 26 tests in the final wave alone, and the publ…
FSCSS Shorthands: the full reference (1.2.5+)
FSCSS 1.2.5 adds property shorthands : compile-time rewrites that turn short property names into standard longhand CSS before the stylesheet ever re…
Our globals.css beat 514 Tailwind utilities, and CSS cascade layers were the whole story
CogniPrep is a Tailwind v4 app with a 719 line hand-written app/globals.css on top. That file contains 17 !important declarations, and most of them…
What I learned building a Twitch chat overlay
Getting messages onto the screen is the easy part: one WebSocket and about forty lines of parsing. The work starts after that. Emoji shift the posit…
Fix the 4 Lighthouse accessibility failures that show up on almost every site
Disclosure: This post was written with AI assistance by an AI agent operating on behalf of Jason Sanchez, and reviewed against the WCAG 2.2 success…
🪪 Avatar RS: Very Efficient Avatar Components for WASM Frameworks
Bien le bonjour 👋! Every WASM app eventually needs an avatar. Profile pictures, user cards, comment threads, they're everywhere. And every time, dev…
Stop Using So Many Media Queries! Use clamp() Instead!
Learn how senior frontend engineers eliminate breakpoint bloat and build fluid, production-grade UIs using native CSS math: clamp(), min(), and max(…
The CSS Bug That Silently Killed 84% of My Background Effect (position: fixed vs absolute)
I built a decorative background layer for a long marketing page: a handful of large, blurred color blobs meant to drift behind the content as you sc…
Stop Guessing CSS Positions: A Senior Dev’s Real World Guide
If you've ever typed position: absolute and watched your badge fly into the upper-left abyss of your browser window... or slapped z-index: 999999 !i…
I built 84 free CSS tools in one place — no login, no ads, just tools
I built 84 free CSS tools in one place — no login, no ads, just tools I got frustrated with CSS tool sites that load slowly, hide features behind a…
Why AI coding assistants write clean-looking CSS that breaks in production (and how to fix it)
If you use Cursor, Claude, or Copilot for frontend work, you already know the feeling. You prompt the model to generate a dashboard card or a modal…
CSS properties I learned today:
GRID-TEMPLATE-AREA: This property allows us to define named grid areas visually. Instead of calculating percentages or pixel values, we can map out…
Stop Your CSS Layout From Breaking: Understand `box-sizing
If you've ever set an element to width: 300px and wondered why it ends up wider than 300px, you're not alone. One of the most important CSS concepts…
Day 3 of Payilagam
Position property in CSS defines how an element is placed on a web page. (top, bottom, left, and right) 5 types of position static - default behavio…
CSS Position Property - Beginner level
CSS Position Property The position property in CSS dictates how an element is positioned on a page and how it interacts with other elements in the l…
Stop Debouncing Resize. The Browser Already Watches It.
Your dashboard has a sidebar that collapses into icons under 900px. Someone on the team drags the browser window slowly from a wide monitor to a nar…
Building web-tui-kit: a framework-independent browser UI with a stable contract
Building web-tui-kit: a framework-independent browser UI with a stable contract I recently open-sourced web-tui-kit , a browser UI design system ins…
The Dropdown Behind the Curtain: A Wizard of Oz Guide to CSS Overflow Clipping
Somewhere over the rainbow, dropdowns render outside their containers. Down here in Kansas, they get cut in half. Kansas Dorothy had a setup wizard.…
Building a Zero-Dependency Cyberpunk AI Prompt Widget for Website Sidebars (Full Source Code)
Hey dev community! 👋 I wanted to find a clean way to increase user time-on-page metrics for a tech blog without bloating the server with heavy track…