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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 are no values explicitly declared for margins or the width. In such acase, the margins default to zero (0) and thewidth defaults to auto. This is illustrated inFigure 8-17.

Figure 8-17

Figure 8-17. Everything set to auto

Note that since horizontal margins do not collapse, the padding,borders, and margin of a parent element can affect its children. Thisis an indirect effect, of course, in that the margins (and so on) ofan element can induce an offset for child elements. Vertical margins | T | U | V | W | X | Y | Z

Index: C

capitalizing text: 4.1.5. Text Transformation
caption-side property: 10.7. Tables
cascade (the): 1.2.4. Cascading
2.8. The Cascade
borders and: Setting borders as quickly as possible
rules: 2.8. The Cascade
Cascading Style Sheets (see entries at CSS)
Cascading Style Sheets and Formatting Properties Working Group (CSS&FP): 1.2. CSS to the Rescue
centimeters (cm): 3.2.1. Absolute Length Units
change markers: 9.3. Absolute Positioning
child selectors: Child selector
children: 2.5. Structure
CLASS attribute: 2.3.1. Class Selectors
class selectors: 2.3. Class and ID Selectors
2.3.1. Class Selectors
combining with pseudo-class selectors: 2.4.1. Pseudo-Class Selectors
vs. ID selectors: 2.3.3. Class? ID? What's the Difference?
simulating: Simulating class and ID
universal selector and: Universal selector
classes, picking names of: 6. Colors and Backgrounds
clear property: 7.6.2. Clear
clearing floated elements: 7.6.2. Clear
clip property: Element clipping
clipping: Overflow clipping
collapsing margins: 7.3.5. Collapsing Margins
block-level elements: Collapsing vertical margins
floating and: 7.6.1. Floated Elements
colon (\:)
in declarations: 2.1.3. Declarations
in pseudo-classes/pseudo-elements: 2.4.1. Pseudo-Class Selectors
color equivalents, list of: Bringing the colors together
color property: 6.1.1. Foreground Colors
BODY attributes, replacing: BODY attributes
border-color property and: Affecting borders
inheritance and: Inheriting color
single keyword with: 2.2.2. Grouping Declarations
color reproduction: 3.1.1. Named Colors
color units: 3.6. Summary
colors: 3.1. Colors
6. Colors and Backgrounds
background: 6.1.2. Background Color
6.1.4. Good Practices
borders: 7.4.3. Border Colors
foreground: 6.1.1. Foreground Colors
6.1.4. Good Practices
hexadecimal: Hexadecimal colors
short: Short hexadecimal colors
hyperlinks: 6.1.1. Foreground Colors
named: 3.1.1. Named Colors
operating system and: 10.5.2. Colors
percentage: Percentage colors
reproducing: 3.1.1. Named Colors
RGB: 3.1.2. Colors by RGB
set by numbers: Going by numbers
web-safe: Web-safe colors
creating: 11.1.3. Case 3: Putting a Magazine Article Online
CSS2 and: Cleaning up
combined alignment: Combined alignment
combining text decorations: 4.1.6. Text Decoration
comma (,)
in clip property: Overflow clipping
separating selectors: 2.2.1. Grouping Selectors
CSS: 1.4.5. CSS Comments
enclosing style declarations in: 1.4.4. Actual Styles
HTML: 1.4.4. Actual Styles
common elements, styling: 11.2.4. Styling Common Elements
complex backgrounds: 6.2. Complex Backgrounds
consistency, achieving with style sheets: 11.1.1. Case 1: Consistent Look and Feel
containing blocks: 9.1. General Concepts
descendant elements and: 9.3. Absolute Positioning
positioning elements outside: 9.1.2. Side Offsets
content area: 4.1.2. The Height of Lines
8.1. Basic Boxes
content overflow (see overflow)
content property: 10.4. Generated Content
contextual selectors: 2.5.1. Contextual Selectors
child selectors and: Child selector
universal selector and: Universal selector
crop marks: 10.8.1. Paged Media
cross marks: 10.8.1. Paged Media
CSS2: 1.2. CSS to the Rescue
3.5. CSS2 Units
10. CSS2: A Look Ahead
absolute font sizes, scaling factor and: 5.3.1. Absolute Sizes
changes from CSS1: 10.1. Changes from CSS1
markers (bullets) and: 8.2.3. List Items
new features with: 10.9. Summary
scrollbars and: Height
selectors: 10.2. CSS2 Selectors
side-offset properties and: 9.1.2. Side Offsets
table elements: 8.4. Inline Elements
CSS (Cascading Style Sheets): 1. HTML and CSS
1. HTML and CSS
(see also style sheets)
benefits of: 1.2. CSS to the Rescue
cascade (see cascade)
file size and: 1.2.5. Compact File Size
combined with: 1.4. Bringing CSS and HTML Together
styling comparison: 1.2.1. Rich Styling
implementations of: 1.3.2. Implementations
limitations of: 1.3. Limitations of CSS
making them work: 11.2.1. Making Styles Work
permitted on pseudo-element selectors: 2.4.3. Restrictions on Pseudo-Class and Pseudo-Element Selectors
rules: 2.1. Basic Rules
sample projects: 11. CSS in Action
tips for using: 11.2. Tips & Tricks
XML and: 1.2.6. Preparing for the Future
CSS comments: 1.4.5. CSS Comments
.css filename extension: 1.4.1. The LINK Tag
CSS&FP (Cascading Style Sheets and Formatting Properties Working Group): 1.2. CSS to the Rescue
curly double-quotes ( ): 10.4. Generated Content
cursive fonts: 5.1. Font Families
cursive text: 5.4.1. Fonts with Style
outline for: 10.5.3. Outlines
shape: 10.5.1. Cursors
cursor property: 10.5.1. Cursors

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Figure 9-10

Figure 9-10. Clipping content with overflow

Finally, there is overflow: auto. This allows user agents to determine what behavior to use, although they are encouraged to provide a scrolling mechanism when necessary. This is a potentially useful way to use overflow, since user agents could interpret it to mean "provide scrollbars only when needed." (They may not, but they certainly could, and probably should.)