Ethan is trying to determine how Cascading Style Sheets can be used for the Web site that he has to develop for his company. He knows that his friend Leon already has developed a similar Web site, and he checks with Leon for some answers to his questions. Ethan is not sure that using CSS is the best way to format Web documents. Leon explains to him the main advantage CSS has over HTML. What is that main reason?

flexible formatting and easily modified code

Explanation:

Cascading Style Sheets is known to be a tool for web design that is used in controlling a webpage layout while HTML directly deals with the actual content on the web design. Over the years, CSS has gone through so many changes and has come up with the latest version which is the CSS 3. Designing your website with CSS provides you with the flexibility to adjust the layout of a webpage. However, the major benefit of using CSS over HTML is the fact that CSS allows for flexible formatting and easily modified coding, unlike HTML.

CSS allows for styling of a web page's markup language (HTML)

Explanation:

CSS also allows for the separation of a web page's document content from it's presentation.

genre is the best answer