Hidde de Vries is a Dutch front-end, design systems and web accessibility specialist who works on web standards for the Dutch government and sits on the W3C's Advisory Board. A co-editor of WCAG and WCAG-EM and a former Mozilla, W3C and Sanity contributor, he writes prolifically at hidde.blog about making technology work for humans, and is a regular conference speaker across Europe.
Lea Verou is a Greek-American web standards leader, MIT researcher, and creator tools advocate whose fingerprints are on the web itself. She has designed web technologies now baked into every major browser, built 30+ open-source projects with nearly 2 billion npm downloads (including PrismJS and Color.js), authored the bestselling CSS Secrets (O'Reilly, 2015), and served as an elected W3C Technical Architecture Group member. A PhD candidate at MIT CSAIL in Human-Computer Interaction and Programming Language Design, she consults for Google, Mozilla, and Stripe, leads the State of HTML survey, and has delivered 100+ conference talks worldwide - always live-coding.