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Cascading Style Sheets: The Definitive GuideSearch this book

Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Index: Z

z-axis: 9.5. Stacking Positioned Elements
z-index property: 9.5. Stacking Positioned Elements


Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N borders of exactly the same width. That's because we didn't define a width, so it defaulted to a certain value. Next, we'll find out about that default, and much more.

There are four ways to assign a width to a border: you can give it a length value such as 4px or 0.1em or use one of three keywords. These keywords are thin , medium (the default | O | P | Q | R | S | T | U | V | W | X | Y | Z


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Figure 5-10

Figure 5-10. Text trying to be more bold

In the first example, the user agent moves up the weight ladder from normal to bold ; in numeric terms, this is a jump from 400 to 700. In the second example, H1 text is already set to bold. If there is no bolder face available, then the user agent sets the weight of B text within an H1 to 800, since that is the next step up from 700 (the numeric equivalent to