Locating elements using CSS selectors

Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation semantics (the look and formatting) of a document written in a markup language such as HTML or XML.

Major browsers implement CSS parsing engines for formatting or styling the pages using CSS syntax. CSS was introduced to keep the presentation information separate from the markup or content. For more information on CSS and CSS selectors, visit http://en.wikipedia.org/wiki/Cascading_Style_Sheets.

In CSS, pattern-matching rules determine which style should be applied to elements in the DOM. These patterns, called selectors, may range from simple element names to rich contextual patterns. If all conditions in the pattern ...

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