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 4th and 5th 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.
Our 2026 line-up
The twelfth edition ran on 11th and 12th of June 2026. Videos will become available in late June.
- Eric Meyer
: Offset paths and SVG - Manuel Matuzović
: Breaking with habits - Jelle Raaijmakers
: Value processing - Patrick Brosset
: Fun with grid lanes - Niels Leenheer
: CSS Doom Laser - Bruce Lawson
: MC - Lea Verou
: What the Color?! - Sara Joy
: Color-Scheming - Una Kravets
: Modern UI Patterns - Jake Archibald
: Selects - Adam Argyle
: All the ways CSS adapts - Ana Rodrigues
: MC - Bramus Van Damme
: View Transitions - Kevin Powell
: CSS is eating JavaScript - Josh Tumath
: Accessible text size - Lyra Rebane
: CSS crimes
From our extensive correspondence with literally none of you we know that you all have pressing life questions such as "How many of my CSS heroes will I meet at CSS Day?" and "How many flamethrowers will they aim at me from stage?"
The answers are lots and probably none, respectively.
You trust us, right? I mean, we're very protective of our target audience.
