What program is needed to create sites with CSS and how to use CSS?

Question

css

1-What program do you need?
2-How to use css?

Answer 1

Actually, you can even write in a notepad.
CSS stands for Cascading Style Sheets and is the language responsible for the visual presentation of documents to the user.
In addition to CSS, you need at least HTML.
In short, the page structure is compiled using HTML, and CSS is responsible for the visual part (colors, fonts, etc.)
Here is the htmlbook.ru
guide Browsers understand html, css by default.
Start with this Video