Ohnoes look what you did you broke teh site!!!!

CSS Day

.css-day.2027 {
  date: '3rd and 4th of June, 2027';
  location: 'Amsterdam - NL';
}

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In honour of CSS Naked Day this page does not have any CSS

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.

The 2026 videos (on Conffab), photos and group photos have been published.

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.

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Our 2026 line-up

The twelfth edition ran on 11th and 12th of June 2026.

Lyra Rebane: CSS crimes
Manuel Matuzović: Breaking with habits
Jake Archibald: Selects
Adam Argyle: All the ways CSS adapts
Bruce Lawson: MC
Sara Joy: Color-Scheming
Patrick Brosset: Fun with grid lanes
Ana Rodrigues: MC
Eric Meyer: Offset paths and SVG
Jelle Raaijmakers: Value processing
Josh Tumath: Accessible text size
Kevin Powell: CSS is eating JavaScript
Niels Leenheer: CSS Doom Laser
Lea Verou: What the Color?!
Una Kravets: Modern UI Patterns
Bramus Van Damme: View Transitions

Rachel Andrew presents at CSS Day 2017 showing a slide that says: 'The more I know about CSS, the more I realise I don't know.