4. Measurements, URLs, and Color Units
In the discussion of CSS syntax in Chapter 1, you saw that the second part of each CSS declaration is a value. In this chapter, you’ll explore some common units for defining sizes (<length> and <percentage>), colors (<color>), and URLs (<url>) for defining these values.
Measurements
Dimensions and other measurements, such as font-size, are not just raw numbers but a number of some specified of units of measure. CSS has quite a variety of measurement units; the most commonly used are outlined in the following sections.
Pixels (px)
A pixel unit (<length>) is a fixed measurement based on the size of a common ...
Get The CSS Pocket Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
