Meyer E.A. Values, Units, and Colors

O’Reilly Media, 2012. - 44 p. - ISBN: 978-1449342517In this book, we’ll tackle features that are the basis for almost everything you can do with CSS: the units that affect the colors, distances, and sizes of a whole host of properties, as well as the units that help to define those values. Without units, you couldn’t declare that an image should have 10 pixels of blank space around it, or that a heading’s text should be a certain size. By understanding the concepts put forth here, you’ll be able to learn and use the rest of CSS much more quickly.