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Jun 28, 2012 · 21. Pseudo-classes are used to select elements according to information that you can't otherwise express using attributes, IDs or classes (or any other info available through the DOM). For example, :root, :first-child, :last-child, :lang() and :not(). Pseudo-elements are mock elements that you can apply styles to selectively as part of other ...
Mar 15, 2021 · 159. the :checked pseudo-class initially applies to such elements that have the HTML4 selected and checked attributes. Source: w3.org. So, this CSS works, although styling the color is not possible in every browser: An example of this in action, hiding the currently selected item from the drop down list.
600. +500. The best way (actually the only way*) to simulate an actual click event using only CSS (rather than just hovering on an element or making an element active, where you don't have mouseUp) is to use the checkbox hack. It works by attaching a label to an <input type="checkbox"> element via the label's for="" attribute.
The :nth-child(n) selector matches every element that is the nth child, regardless of type, of its parent. Odd and even are keywords that can be used to match child elements whose index is odd or even (the index of the first child is 1).
Feb 18, 2011 · Although they are rendered by browsers through CSS as if they were like other real DOM elements, pseudo-elements themselves are not part of the DOM, because pseudo-elements, as the name implies, are not real elements, and therefore you can't select and manipulate them directly with jQuery (or any JavaScript APIs for that matter, not even the Selectors API).
Nov 9, 2011 · A CSS pseudo-element is a keyword added to a selector that lets you style a specific part of the selected element(s). For example, ::first-line can be used to style the first line of a paragraph. /* The first line of every <p> element. */ p::first-line { color: blue; text-transform: uppercase; }
In fact, a :stuck pseudo-class was discussed some time ago; the main complication, it was found, is one that plagues just about any proposed selector that attempts to match based on a rendered or computed style: circular dependencies. In the case of a :stuck pseudo-class, the simplest case of circularity would occur with the following CSS:
Although there is no parent selector in standard CSS at present, I am working on a (personal) project called axe (ie. Augmented CSS Selector Syntax / ACSSSS) which, among its 7 new selectors, includes both: an immediate parent selector < (which enables the opposite selection to >) an any ancestor selector ^ (which enables the opposite selection ...
Note that inline styles participate in the same cascade as selectors in rule sets, and take highest precedence in the cascade (!important notwithstanding). So they take precedence even over pseudo-class states. Allowing pseudo-classes or any other selectors in inline styles would possibly introduce a new cascade level, and with it a new set of ...
Feb 2, 2012 · The :not negation pseudo class. The negation CSS pseudo-class, :not(X), is a functional notation taking a simple selector X as an argument. It matches an element that is not represented by the argument. X must not contain another negation selector. You can use :not to exclude any subset of matched elements, ordered as you would normal CSS ...
