What are style sheets?

Question

plz guys help me beacause I want to learn

Answer 1

CSS is used to write style sheets. This code can be imported and applied to HTML pages to change how they look. It can affect the entire page and/or just individual elements.
Ex: You can change the size, font, border and/or color of all <h1> tags considered "important". Or you can set a background image or color for the whole page.

Answer 2

Style sheets are used to design.