About CSS Day

CSS Day is an annual CSS conference organised by Web Conferences Amsterdam. It brings specifiers, implementors, teachers, and authors together to discuss the current state of CSS, upcoming features, cool demos, and anything else that seems on-topic and worthwhile.

CSS Day was founded by Krijn Hoetmer and PPK in 2013. In the early years Stephen Hay was also involved, designing the logo and this site.

Krijn stepped down as an organiser after the 2024 edition. PPK asked Eventstack to support him in the future.

Historical reasons

Originally CSS Day was a one-day conference. Starting with the fourth edition we added special theme days. Thus we had one CSS Day and one Something Day — UX, HTML, whatever struck our fancy.

In 2022, after Covid and CSS's Cambrian explosion, we decided to make it a two-day focused CSS conference. We didn't change the name to CSS Days, mostly because we'd need another logo — and the logo is part of the cherished history of the conference, not something that one can change all of a sudden.

For these historical reasons CSS Day, even though it's a two-day conference, is still called CSS Day.