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Raspberry Pi For Dummies by Mike Cook, Sean McManus

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Validating Your HTML

You can test your web page in your browser, of course, but just because a web page works in your browser it is no guarantee it will work in someone else’s. The best way to be sure that it will work is to try your code in a validator, which checks for any HTML errors.

The W3C (World Wide Web Consortium), which is responsible for updates to web standards, including HTML, has a validator at http://validator.w3.org . You can find an independent validator at http://validator.nu . Both check your code and let you know where you’ve made any errors in a matter of milliseconds. You might sometimes see warnings that you don’t need to worry about, but these tools are a great way of finding tags that are misspelled or misplaced.

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