| A | B |
| CSS Selector | The HTML element that you want to style. |
| CSS Value | The attribute you want applied to the property |
| Domain Name System DNS | Internet service that translates domain names into IP addresses. |
| Hexadecimal color codes | Color values written with the # sign followed by six digits using the numbers 0 to 9 and A to F to represent the amount of red, green and blue. |
| HTML | A language which means that special codes are used to define elements. |
| HTML Attribute | Provide HTML attributes with additional meaning and context. |
| HTML Element | The opening and closing tags including the text in between. |
| HTML Tag | Special codes which describe or define content in a Web document |
| Hypertext Transport Protocol | The underlying protocol for how content is communicated on the Web. |
| Internet Protocol IP Address | A numeric string that identifies a device on a network |
| Nesting | Putting an object inside another object; such as an HTML tag inside another HTML tag. |
| Open standard | A standard that is publicly available and has various rights to use associated with it, and may also have various properties of how it was designed |
| Relative Link | A link that specifies the name of the file to be linked to as it relates to the current document. |
| Rgb color codes | Color values using the combination of red, green, and blue values ranging from 0 to 255. |
| Uniform Resource Locator URL | The address used for locating a document on the Web. |
| Web Accessibility Initiative | A program for developing strategies, guidelines, and resources to help make the Web accessible to people with disabilities |
| Web browser | Special software that displays the page by reading the instructions in the web document. |
| Web Page | A document which can display text, graphics, audio, video and other elements through a web browser |
| Web server | A computer that runs special software to serve up Web content by responding to requests. |
| Website | A collection of related webpages with a starting point or home page. |
| World Wide Web Consortium | An international community that develops open standards for the Web. |
| World Wide Web or Web | A worldwide network of computers that communicate through http |