Use cases and requirements for standardizing element queries.

A proposal to add explicit APIs to the Web for querying and setting the visual viewport

CSS position:fixed qualifier.

The repository for the Frontend Performance training

Resilient Web Design: a web book

Progressive Web App 🕵️ Feature Detector

Client library for sending webmention and pingback notifications

A script to highlight elements that are mismatched incorrectly to @​font-face blocks, which may result in shoddy faux bold or faux italic rendering.

Eleventy theme for showcasing photography and web comics

📝 Source files for my personal website built with Eleventy and hosted with Netlify.

A leaderboard of hosting providers' TTFB performance

A lightweight web component helper for HTML5 videos.

personal blog

Geolocation Sensor

A collection of information about game console browsers.

Use the power of 11ty to generate web components (custom elements).

Hebra is a skeletal Eleventy starter kit that gives you nothing but good ol’ HTML and an RSS feed. It serves as the ideal kick-off point for your projects.

An announcement banner web component.

A multilingual eleventy starter based on this post (https://www.webstoemp.com/blog/multilingual-sites-eleventy/)

Testing stylesheet downloads per inapplicable media queries

My personal site, running on Hylia!

Hylia is a lightweight Eleventy starter kit to help you to create your own blog or personal website.

A better way to test, learn, and demo CSS selectors

A manifesto

Directory structure-based navigation for eleventy-plugin-navigation

A jQuery plugin to define and interact with scrolling zones.

A browser API to make developers aware of user preferences with regards to data savings

The code powering https://cassey.dev

A Web Component that helps responsively using a video as the background of a content block