What is CSS submission in SEO? What are the benefits of CSS submission in SEO?

Cascading Style Sheets (CSS) is a language that permits Web designers to attach styles such as spacing, color, font, etc. to HTML documents. ... There are many benefits of using CSS. Maintenance of a Web site made with CSS is much easier compared to the ones which are table based.

If your CSS is unique and good, then we will get traffic and of course if CSS directory approves it, then we will also be having back links.