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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