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Viewport Units and Calc()

With a focus on Viewport units USING calc, here's responsive squares and typography and my most popular Pen, The Cover Page. As a note, because of the iFrame, the viewport's size is the size of the white area in the Pen.

See the Pen Viewport Units by Bryan Robinson (@brob) on CodePen.

See the Pen Cover Page by Bryan Robinson (@brob) on CodePen.