But you don’t need to use it, and your sites can still look good without it. How Do CSS and HTML Work Together? If you ...

The preferred practice is to put style information in a separate file with a .css extension. Using formatting information contained within an external cascading style sheet is accomplished via the ...

it will be much easier to read and edit your HTML code. Finally, using CSS can make it easy to change the look of your entire website by changing just one file. For example, if you want to change ...