Issue 417 - How Google wants to move towards a faster Web (3) clear filters

Some Things You Oughta Know When Working with Viewport Units — There are a number of “gotchas” when trying to set height and width based on the full height/width of the viewport.

A Super Weird CSS Bug That Affects Text Selection — An interesting quirk where merely using a selector without any style properties can cause no styling to be applied at all.