Wednesday, September 16, 2026
HomeCSSChallenge #639

Challenge #639


Discover ways to use lazy loading with out hurting internet efficiency, a small interactive cowl element, how one can have enjoyable with leaked Claude Code’s supply code, and extra.

Headlines

How to Use Lazy Loading Without Hurting Web Performance

Learn how to Use Lazy Loading With out Hurting Internet Efficiency

Jakub Andrzejewski explains when lazy loading improves efficiency, when it backfires, and the way it impacts Core Internet Vitals like LCP, CLS, and INP — with sensible patterns and real-world pitfalls.

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An Interactive Cover Component

An Interactive Cowl Element

Kitty Giraudel provides a technical walkthrough on constructing a small interactive cowl element with some nifty CSS tips.

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What Have I Been up Tp

I’ve recently started a new role as a Developer Advocate at JointJS.

I’ve just lately began a brand new position as a Developer Advocate at JointJS.

JointJS is a JavaScript diagramming library for interactive UIs. I’ve been creating quite a lot of content material round it, particularly associated to AI Coding Brokers, on the weblog and YouTube channel.

So for those who’re thinking about AI-assisted improvement workflows, Claude Code, or creating interactive visible apps, try a number of the newest content material I created:

Construct higher Claude Code Playgrounds
Customise JointJS demo app with Claude Code
5 tips about utilizing AI coding brokers with JointJS (and different frameworks)

Simply as properly, I’ve been rather more energetic on LinkedIn recently, so let’s join on Linkedin too.

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CSS Weekly on YouTube

Claude Code's Source Code Leaked! (Let’s Have Fun With It!)

Claude Code’s Supply Code Leaked! (Let’s Have Enjoyable With It!)

Claude Code’s supply code has simply been leaked through a map file of their npm registry. This may be very unhealthy for them, however for us, it is a implausible likelihood to have enjoyable and doubtlessly construct one thing actually cool.

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Frontend News #22

Frontend Information #22

Learn how to detect at-rule help in CSS, how the pointer-box-offset property works, what the totally different and inventive methods are to pick out the HTML ingredient, the way it’s potential to recreate the x86 CPU structure in CSS, and extra.

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Articles & Tutorials

and popover: Baseline layered UI patterns

David A. Herron exhibits learn how to construct UI patterns for modal home windows and prompts utilizing the <dialog> and popover internet options.

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Multi-Stroke Textual content Impact in CSS

Yuan Chuan demonstrates learn how to create a multi-stroke textual content impact.

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New CSS Multi-Column Structure Wrapping Options

Abhishek Pratap Singh explains how the column-height and column-wrap CSS multi-column format properties allow you to wrap the extra content material into a brand new row.

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font-family Doesn’t Fall Again the Approach You Suppose

Harry Roberts shares a fast however essential reminder that font-family declarations don’t inherit fallback stacks the way in which many builders assume.

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box-shadow isn’t any different to stipulate

Manuel Matuzovic explains why utilizing box-shadow for styling focus outlines will be problematic.

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Instruments

View Transitions Toolkit

A set of utility capabilities to extra simply work with View Transitions.

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CalendarJS

CalendarJS is a modular suite of JavaScript parts that makes time-based UI painless.

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Inspiration

CodePen TV - 100% Pure CSS

CodePen TV – 100% Pure CSS

Ben Evans created one other gorgeous piece of artwork in pure CSS.

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Till Subsequent Week

Thanks for studying! Should you discover the content material priceless, please contemplate supporting the e-newsletter on Patreon.

Joyful coding,

Zoran Jambor



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