There are times when you want the printed output from a web page to look different that the way the page is displayed on a computer screen. This is particularly useful with blogs and web sites that provide information that users may want to print and file away for later use or for late night reading. I am amazed at the number of major web sites whose pages cannot be printed properly because the content either doesn’t fit on the page, or is cluttered with ads and menus that have no useful purpose on a printed page. CSS can come to the rescue with an external style sheet designed to format printed output.
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CSS shortcuts combine cascading style sheets rules into one efficient line of code. If your web site uses large stylesheets, cutting down on the amount of CSS code can help your code to load and render faster.
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External CSS style sheets offer numerous benefits to web site design. First, they centralize CSS rules, which means that making a change in one file affects the entire web site; therefore, site maintenance is much simpler. Second, an external style sheet reduces the amount of web page code, which makes it easier for spiders to dissect the code and get at the content. Third, most browsers cache this file, which speeds up the loading and rendering of a web page.
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