The Anatomy of Cascading Style Sheets (CSS)

Part of the Web Design All-in-One For Dummies Cheat Sheet

Cascading Style Sheets (CSS) is a style sheet language used to describe the presentation semantics — the style and positioning — of elements within a web document written in a simple markup language.

CSS syntax is made up of two parts: the selector and the declaration block inside curly brackets. Inside the declaration block you can have multiple declarations. Each declaration is made of two parts — the property and the value:

p {font-face: Georgia, Tahoma; color: #ffcc00; }

In this example:

  • p is the selector.

  • {font-face: Georgia, Tahoma; color: #ffcc00; } is the declaration block.

  • font-face: Georgia, Tahoma; and color: #ffcc00; are separate declarations.

  • font-face is a property and Georgia, Tahoma is its value.

  • color is a second property and #ffcc00; is its value.

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