the basic unit of expression in CSS. A style rule is composed of two parts: a selector and a declaration. The style rule expresses the style information fro an element.
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recommendation
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the final stage of development by the W3C, indicating that a technology release has been reviewed and tested extensively
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pseudo-element
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an element that lets you change other aspects of a document that are not classified by elements, such as applying style rules to the first letter or line of a paragraph
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Type selector
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A CSS selector that applies a rule to every instance of the element in this document
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<link> element
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an HTML element that lets you establish document relationships, such as linking to an external style sheet
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pseudo-class
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an element that selects elements based on characteristics other than their element name
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property
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a characteristic stated in a style rule, such as color, font-seze, or margin. It's part of the style rule declaration
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parent element
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an HTML element that contains child elements
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!important
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CSS keyword that lets the user override the author's style setting for a particular element
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inheritance
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the order of CSS rules dictating that child elements inherit rules for their parent element.
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child element
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an HTML element contained within another element
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style sheet
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a set of rules that describes a document's display characteristics. There are two types: internal and external.
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universal selector
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a selector that lets you quickly select groups of elements and apply a style rule
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selector
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the part of a style rule that determines which HTML element to match. Style rules are applied to any element in the document that matches the selector.
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declaration
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portion of a style rule that consists of a property name and value. The browser applies the declaration to the selected element.
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cascade
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style sheets originate from three sources: the author, the user, and the browser. The cascading feature of CSS lets these multiple style sheets and style rules interact in the same document.
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value
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the precise specification of a property in a style rule, based on the allowable values for the property.