Delays Before @keyframe Animations and Between Iterations

There are no obvious CSS properties or values for making a @keyframe animation wait between iterations, or have a pause before starting. But Nils Riedmann cooked up a clever way to do it using linear() animation timing. I think this is cleaner than faking it with multiple benign keyframe steps. Remember linear is not the same as linear(). The later is a function that can take any number of points and thus create any sort of easing.