CSS Validations: The process of checking the CSS code against the rule is called the validation of CSS. While the learner writes a code, possible to make many blenders. So how to know that your CSS code is accurate.
In case you may want to validate your CSS code that embedded in the XHTML document, first, check the XHTML you use is valid or not. There are many CSS validators available on the internet and these CSS validators check your CSS to reach the standards set by W3 Consortium. Some of the few validators specify which CSS supports which web browsers.
Some of us may think that why we need to validate our CSS codes. For that, there are many reasons but the important one is that helps cross-platform, cross-browser and future compactibility. As a good web designer, your code must be more accurate without any errors. Finally, a good quality website increases search engine Visibility.