Advantages
- Separation of content from presentation
- CSS facilitates publication of content in multiple presentation formats based on nominal parameters. Nominal parameters include explicit user preferences, different web browsers, the type of device being used to view the content (a desktop computer or mobile Internet device), the geographic location of the user and many other variables.
- Site-wide consistency
- Bandwidth
- A stylesheet, internal or external, will specify the style once for a range of HTML elements selected by
class, type or relationship to others. This is much more efficient than repeating style information inline for each occurrence of the element. An external stylesheet is usually stored in the browser cache, and can therefore be used on multiple pages without being reloaded, further reducing data transfer over a network. - Page reformatting
- Accessibility
- Without CSS, web designers must typically lay out their pages with techniques that hinder accessibility for vision-impaired users, like HTML tables (see Tableless web design#Accessibility).
Read more about this topic: Aural Cascading Style Sheets
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—Sarah M. Grimke (1792–1873)
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—Ralph Waldo Emerson (1803–1882)
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—Johann Wolfgang Von Goethe (1749–1832)