Ron Valstar

Using the observation.og API to get instant updates for a specific species.

Dead mosquitos that are dead

Condens on a window pane in pure CSS

A demonstration of viewing websites without CSS by removing all style elements via JavaScript, inspired by Firefox Reader View and 1995-era web aesthetics.

Recursive CSS

Single element eggs

You don't need cloud services for prerendering.

Single element leafs

Cheese holes

Single element ladybugs

Perlin noise something

Perlin noise spokes

Forest animation

How to easily use prefers-media-queries and make them adjustable through user preferences.

Thoughts about signals, some history, and an easy explanation on inner workings.

Ten years ago I made a list of software and tools I use as a freelancer.

Don't put your email address in source files

Easy instructions on how to implement custom local ESLint rules.

A simple solution to determining the scrollbar thickness for the current browser or device.

A practical guide on how to determine the way your application is used in terms of touch-, mouse- or keyboard interaction.

Rotating nested elements with animated background

A single background with repeating gradients exhibit moire interference patterns and glitches.

A single background with radial gradients seeded with a prng and animated with Perlin noise.

Basic structure and example of a page transition in a single page application.

Some useful Cypress custom commands to make your tests cleaner

A simple solution on how to use Sass variables in React styled-components.

To update a Cypress alias on the fly we can create and overwrite Cypress commands to update DOM aliases by traversing up the selector tree.