I an a beginner. Can I start with CSS.

Answer 1

It depends on what you want to achieve. If you want to delve into web development, HTML is a good start and subsequently, CSS. But if you want to start programming right away, Python is a good start cos of its beginner friendly syntax.
Good luck on the part you choose!

Answer 2

I would suggest html first before starting css as both are involved in web development and page layout.