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Why Use CSS?

Some of the benefits of using CSS for authors include

  • Easy to maintain —The power of CSS is that a single CSS file can be used to control the appearance of multiple HTML documents. Changing the appearance of an entire site can be done by editing one CSS file rather than multiple HTML documents.

  • Smaller file sizes —CSS allows authors to remove all presentation from HTML documents, including layout tables, spacer images, decorative images, fonts, colors, widths, heights, and background images. Presentation can then be controlled by CSS files. This can dramatically reduce the file sizes of HTML documents.

  • Increased accessibility —CSS, combined with well-structured HTML documents, can aid devices such as screen readers. With presentational markup removed, the only thing that a screen reader encounters is structural content. CSS also can be used to increase the clickable area of links, as well as control line height and text line lengths for users with motor skill or cognitive difficulties.

  • Different media —CSS can be styled specifically for different media, including browsers, printers, handheld devices, and projectors—without changing the content or document structure in any way.

  • More control over typography —CSS allows authors to control the presentation of content with properties such as capitalize, uppercase, lowercase, text-decoration, letter-spacing, word-spacing, text-indent, and line-height. CSS can also be used to add margins, borders, padding, background color, and background images to any HTML element.


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