responsive-design
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Kevin Powell Built a Classroom That Fits in a Browser
A former print designer started a CSS channel to keep learning beyond his classroom syllabus. More than a thousand videos later, he is still making the case that understanding the web is worth the trouble.
Dave Rupert
Dave Rupert is a senior UX engineer at Microsoft, co-founder of the Austin-based web agency Paravel, and co-host of the long-running ShopTalk Show podcast. With over two decades in web development, he is widely recognized for his accessibility advocacy - notably founding The A11Y Project in 2014 - and for open-source tools like FitVids.js and FitText.js. He brings a maker's instinct, a teacher's heart, and a quietly sharp wit to everything he touches.
Scott Jehl
Scott Jehl is a Senior Software Engineer on the Web Performance team at Squarespace, a 20-year veteran of the front-end web who helped define modern responsive and performant design. He authored 'Responsible Responsive Design' (A Book Apart, 2014) and co-authored 'Designing with Progressive Enhancement' (2010), created foundational open-source tools like Respond.js, loadCSS, and Picturefill, and recently led the effort that brought lazy loading to HTML video and audio elements - an official web standard as of March 2026. He speaks globally, teaches online, and believes the web should work fast for everyone, everywhere.