What are the three viewports? (Spoiler: layout, visual, and ideal.) Why do we need all three? Why does responsive design work? (Not how. Why.) What happens when you set the meta viewport? How do browsers go wrong? (Spoiler: in plenty of innovative ways.) And what about resolution, or DPR? (Spoiler: it is not what you think it is.) In this session PPK, who spent more time on the mobile viewport than anyone not working for a browser vendor, answers these questions and more.
Slides: quirksmode.org/presentations/Spring2014/viewports_cssday.pdf
About PPK: quirksmode.org
More about CSS Day: cssday.nl or twitter.com/cssdayconf
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