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A browser is a software program which a user can use to view websites. A website consists of HTML, CSS and JavaScript code, the so-called front-end. The browser processes this code to present (or render) a website to the user.
There are many different browsers. Examples include Safari, Firefox, Chrome, Internet Explorer and Edge. Each browser can render the same website in a slightly different way. This is partly because not every browser supports the exact same HTML, CSS and JavaScript. Also, not every browser interprets code the same way.

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