Web UI Labs

A collection of small frontend UI experiments built with plain HTML, CSS, and JavaScript, by Guilherme Zeni.

Calculator preview

Calculator

A simple, but fancy, calculator interface to run basic operations.

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Chess Opera Game preview

Chess Opera Game

A visual chess animation recreating Paul Morphy’s famous Opera Game.

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Chromatic Vortex preview

Chromatic Vortex

An interactive, spinning color wheel that reacts to your mouse. Built with CSS Houdini for Chrome/Edge, with a smooth canvas fallback for other browsers.

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Prime Binary Display preview

Prime Binary Display

An interactive visualization of prime numbers represented in binary form.

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Primes Game preview

Primes

Play this variation of the famous 2048 game, but with prime numbers!

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