- CSS stands for cascading style sheet
- it describes how html elements are to be displayed on screen, paper, or in other media.
- it consists of a selector and a declaration block.
- The ID uses the id attribute of an HTML element to select a specific element, but the class selector selects HTML elements with a specific class attribute.
- the 3 types of style sheets are inline css, internal css and external css
- background-color: lightblue;
- a:link- a normal unvisited link, a:visited-a link the user has visited., a:hover- a link when the user mouses over it, a:active- a link the moment it is clicked
- margin, border, padding, content
- static, relative,fixed,absolute,sticky