Css And Cascading Style Sheet

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CSS or Cascading Style Sheet is a language used to format a document written in a markup language such as HTML. It is used primarily to format elements such as colour, font, layout, and positioning. CSS can be used in three different ways. External, embedded and inline. Each of which I will expand on later. CSS was initially released in December 1996 and has evolved through 4 levels, CSS 1, 2, 2.1 and 3.
 CSS gives web designers the ability to create 'rules ' and apply these rules to multiple different elements within a website. In the case of External CSS, this way of formatting being completely separate from the design means any change required by the client can be altered on the style sheet and will effect every instance within the site where the CSS is being used. I will expand more on the three types of CSS later in this presentation. "CSS use can lead to faster page downloads"[1] Most web browsers will load rules from the CSS once and then cache the data to use when each page is loaded. This means using CSS in websites "can lead to lighter page loads"[1], meaning as the browser is simply pulling information from the cache, the web pages will load much faster then without. This will therefore result in lower requirements from the server side. Since the majority of CSS is completely separate to the content of the website, making small, spread changes or troubleshooting any design problems becomes simple. It allows the designer to control every visual aspect of the
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