| A | B |
| Cascading Style Sheets (CSS) | Sets of formatting instructions, usually stored in a separate file, that control the appearance and position of text and graphics on a web page or throughout a website. |
| Class type | A type of style that can contain a combination of formatting attributes that can be applied to a block of text or other page elements. |
| Code hints | Lists of tags that appear as you type. |
| Declaration | Consists of a property (such as font-size or font-weight) and a value (such as 14 px or bold). |
| External style sheet | Collection of styles stored in a separate file that control the formatting of content on a web page. |
| ID type | A type of CSS rule that is used to redefine an HTML tag. |
| Inline style | A style whose code is placed within the body tags of a web page. |
| Internal or embedded styles | Styles that are part of an HTML page rather than comprising a separate file. Usually found in the header |
| Rules | Sets of formatting attributes for page content. |
| Selector | Name of the tag to which the style declarations have been assigned. |
| Tag type | A classification by type of style used to redefine an HTML tag. |