Cascading Style Sheets (CSS) is a style sheet makeup language used to format the styling of most websites. The language can be applied to any HTML, XHTML or XML page. The W3 Schools certification ensures the fundamental knowledge and application of CSS.
There are many ways to address styling on a website. Knowing all the functions and best practices ensures the code is written in the most optimal way.
CSS has hundreds of different functions. Knowing all the functions and syntax assures quicker debugging and troubleshooting.
Knowing CSS best practices assures that your site’s styling architecture is always designed correctly, allowing for less headaches down the road.
CSS attributes tend to have different effects on different browsers. Knowing how each function works assures the styling elements are coded in a way that load the same for all browsers and platforms.