Page 128 - DCAP408_WEB_PROGRAMMING

Web Programming

Notes 4.6 Limitations of CSS

 Limited transcription capabilities
 Limited transposition of elements (float:left/right)

 Calls of parameterized formatting tasks the major transcription type supported
 In CSS1 context specification limited:
 No sibling or parent/child relationships
 Limited use of attributes (CSS1: only class)

 CSS2 more powerful,
 But no access to element’s children or content
 Unable to access targets of cross references (?)
 Non-programmable

 No decision structures
 Unable to store calculated quantities
 Non-extensible
 Relatively simple

 Western-language orientation (left-to-right)
 XSL allows unrestricted transformations of the document to precede a CSS-like
formatting

4.7 Advantages of CSS

 Workflow
 Faster downloads
 Streamlined site maintenance
 Global control of design attributes

 Precise control (Advanced)
 Positioning
 Fluid layouts
 Cost Savings

 Reduced Bandwidth Costs
 One style sheet called and cached
 Higher Search Engine Rankings
 Cleaner code is easier for search engines to index

 Greater density of indexable content
 Faster download = better usability
 Web usability redesign can

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