Kacper Szarkiewicz

Design Engineer

let's build together

Me

I build dApps. I specialise in Frontend and UX in Web3.

Projects

Numora

The new Standard for Numeric Inputs.

Writing

Latest

The Critical Rendering Path - From URL to First Pixel

Follow one request from the moment you press…

EIP-6963: discovering wallets without the window.ethereum race

EIP-6963 event handshake lets you discover every wallet, replacing window.ethereum's global race.

Keyboard navigation shouldn't be animated

When a command menu is driven by the…

Why z-index Isn't Working

CSS z-index explained: why z-index: 9999 fails, how stacking contexts trap elements, and how the top layer solves it.

Direction-Aware Navigation

How to build the Aave navigation menu in Radix UI.

Expanding Hit Areas in CSS

Why hover states flicker between elements, and how to fix it, WCAG 2.5.8

Browse by track

Blockchain EngineerWallets, dApps, and blockchain frontends.

0/1

Design EngineerWhat makes UI feel right.

0/8

Frontend EngineerHow the browser actually works.

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External DesignsRecreating the slickest UIs.

0/0

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Articles I find interesting

Browse skills

Agent skills I use

Practice flashcards

Learn UX/UI vocabulary

Stay updated with my latest articles and projects. No spam, no nonsense.

You can see more of my work on X, more of my code on GitHub, and my videos on YouTube. You can also reach me at .