CSS Day is the annual CSS community conference that brings specifiers, implementors, teachers, and authors together to discuss the current state of CSS, upcoming features, and cool demos.
On 3rd and 4th of June 2027 we'll run our thirteenth edition. Do you want to talk about CSS in real life, and not just online? Make friends, not followers? Then come. You'll love it.
Want to buy 2027 tickets on the 2026 budget? Let us know.
Our 2026 line-up
The twelfth edition ran on 11th and 12th of June 2026.
The videos (on Conffab), photos and group photos have been published.
- Bruce Lawson
: MC - Jelle Raaijmakers
: Value processing - Kevin Powell
: CSS is eating JavaScript - Una Kravets
: Modern UI Patterns - Lea Verou
: What the Color?! - Eric Meyer
: Offset paths and SVG - Niels Leenheer
: CSS Doom Laser - Josh Tumath
: Accessible text size - Adam Argyle
: All the ways CSS adapts - Patrick Brosset
: Fun with grid lanes - Bramus Van Damme
: View Transitions - Manuel Matuzović
: Breaking with habits - Jake Archibald
: Selects - Lyra Rebane
: CSS crimes - Ana Rodrigues
: MC - Sara Joy
: Color-Scheming









