HTML and CSS Reference
Future of CSS
As CSS has evolved as a language, it has often attempted to make
common tasks that may be difficult or inflexible quite easy. Some of
these new properties are based on experimental properties in individual
browsers, but often they're based on design and code patterns used every
day by developers.
For example, the need to use multiple HTML elements as hooks so that
multiple background images can be used (shown in Figure 7.4), and the
frequency with which this is done, has led to CSS changes that support
multiple background images on a single element, as you saw in Chapter 8.