CSStyylisäännöistä
CSStyylisäännöistä is a Finnish term referring to CSS (Cascading Style Sheets) rules. CSS is a stylesheet language used for describing the presentation of a document written in HTML or XML. It controls how elements are displayed on screen, on paper, in speech, or on other media. CSS defines how to render elements on screen, thus taking care of the layout and visual appearance of websites.
A CSS rule consists of a selector and a declaration block. The selector points to the HTML
There are various types of selectors in CSS, including element selectors, class selectors, ID selectors, attribute