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katharine horlick
2,146 Pointswhy is the background size 20px 20px
why is the background size 20px 20px rather than just 20px
2 Answers
Erik Nuber
20,629 PointsThere isn't a particular reason, saying it with just one 20px would have the same effect.
Alex Ginns
6,509 PointsWriting both statements would have the same effect, but it's good practice to do both width and height