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Index: E

element boxes: 7.1. Basic Element Boxes
8.1. Basic Boxes
element clipping: Element clipping
element selectors: 2.1.1. Rule Structure
classification of: 2.9. Classification of Elements
floated (see floated elements)
overlapping, altering: 9.5. Stacking Positioned Elements
styling common: 11.2.4. Styling Common Elements
visibility of: 9.1.5. Element Visibility
elevation property: 10.8.2. The Spoken Word
em box: 5.3. Font Size

Figure 7-81

Figure 7-81. Using images as bullets

Of course, you should exercise care in the images you use, as this example makes painfully clear (shown in Figure 7-82):

UL LI {list-style-image: url(big-ohio.gif);}
Figure 7-82

Figure 7-82. Using really big images as bullets

You should usually provide a fallback for the bullet type. Do this just in case your image doesn't load, or gets corrupted, or is in a

em-height (em): em and ex units
em length value: 5.3.3. Percentages and Sizes
em square: 5.3. Font Size
embedded style sheets: 1.4.2. The STYLE Element
ex-height (ex): em and ex units
Extensible Markup Language (see XML)
external style sheets: 1.4.1. The LINK Tag
creating: 11.1.1. Case 1: Consistent Look and Feel
with @import directive: 1.4.3. The @import Directive
with LINK element: 1.4.1. The LINK Tag
extra space around elements, adding: 7.2. Margins or Padding?
7.2. Margins or Padding?
(see also margins)

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Theidea behind positioning is fairly simple. It allows you to defineexactly where element boxes will appear relative to where they wouldordinarily be -- or relative to a parent element, or anotherelement, or even to the browser window itself. The power of thisfeature is both obvious and surprising. It shouldn't be toosurprising to learn that this is the part of CSS2 that user agentsusually first attempt to support. Given that there were some verygood positioning implementations on the horizon as the book was beingcompleted, we felt it worthwhile to give readers a glimpse of