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CSS Validations
As a beginner, it is very common that you will make mistake in writing your CSS code. Incorrect or non-standard code may cause unexpected results in how your page displayed or functions in a web browser.

The World Wide Web Consortium (W3C) has created a great tool to automatically check your style sheets, and point out any problems/errors your code might have, such as invalid CSS property missing closing bracket or missing semicolon (;) etc. It is absolutely free.

Why Validate Your HTML Code?

There are a number of reasons why you should validate your code.

1. It Helps Cross-Browser, Cross-Platform, and Future Compatibility.

2. A good quality website increases search engine visibility.

3. Professionalism: As a web developer, your code should not raise errors while seen by the visitors.