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Index: O

oblique text: 5.4.1. Fonts with Style
octothorpe (#) preceding ID selectors: 2.3.2. ID Selectors
offsets (see side-offset properties)

5.4.1. Fonts with Style

font-style is very simple: it's used toselect between normal text,italic text, and oblique text.That's it! The only complications are in recognizing thedifference between italic and oblique text and knowing why browsersdon't always give you a choice anyway.

Opera
CSS implementation in: 1.3.2. Implementations
padding and: 7.5.4. Padding: Known Issues
padding values, negative: 7.5. Padding
operating system, colors and: 10.5.2. Colors
order sorting: 2.8. The Cascade
ordered lists: 7.7.1. Types of Lists
7.7.2. List Item Images
origin image: 6.2.3.3. Length values
origin sorting: 2.8. The Cascade
origins: 2.8. The Cascade
orphans property: 10.8.1. Paged Media
outline properties: 10.5.3. Outlines
overflow: 9.1.4. Content Overflow and Clipping
overflow-clip property: 9.1.4.2. Overflow clipping
overflow clipping: 9.1.4.2. Overflow clipping
overflow property: 9.1.4.1. Overflow
overlapping
elements, altering: 9.5. Stacking Positioned Elements
floated elements, preventing: 8.3.1. Floating: The Details
margins (see collapsing margins)
text, preventing: 8.4.3. Managing the Line Height of Inline Elements
overlining: 4.1.6. Text Decoration
overriding previously declared values: 11.1.3. Case 3: Putting a Magazine Article Online


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Mosaic, had some trouble with comments. The problems ranged frommangled display to browser crashes. This happened with only a veryfew browser versions, and it's safe to say that very few ofthese browsers are still being operated. Be aware that there are somepeople out there using these particular browsers, and they may wellhave major problems viewing your page if you use these comment tags.

11.2.10. Disappearing Styles

Here's a rather obscure Navigator bug which is utterly baffling when encountered. Under whatever circumstances trigger the bug (frames seem to be a major cause), resizing the browser window can cause all of the styles to go away, leaving plain text in their wake.

Figure 7-60

Figure 7-60. Padding on an inline element

Note the extra background space that appears on either end of the boldfaced text. There's your padding.

This all seems familiar enough, even when the boldfaced text stretches across multiple lines. Turn to Figure 7-61 to see what happens with padding set on an inline element displayed across multiple lines:

B {padding: 10px; background: silver;}
Here are some benefits of the structured nature of XML:

than one style for a given border. For example:

P.aside {border-style: solid dashed dotted solid;}

The result, shown in Figure 7-33, is a paragraphwith a solid top border, a dashed right border, a dotted bottomborder, and a solid left border.

Figure 7-33

Figure 7-33. Multiple border styles on a single element

Again we see the top-right-bottom-left order of values. This is justlike the ability to set different margins with multiple values. All