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As of June 2011, Firefox 5 includes CSS animations support. [4] CSS animation is also available as a module in the nightly builds of WebKit as well as Google Chrome, Safari 4 and 5 and Safari for iOS (iPhone, iPod Touch, iPad), Android versions 2.x and 3.x, Internet Explorer 10+ and Microsoft Edge browser, the BlackBerry OS 6 web browser, with the -webkit-prefix.
Though most polyfills target out-of-date browsers, some exist to simply push modern browsers forward a little bit more. Lea Verou's -prefix-free polyfill is such a polyfill, allowing current browsers to recognise the unprefixed versions of several CSS3 properties instead of requiring the developer to write out all the vendor prefixes.
To perform feature detection tests, Modernizr often creates an element, sets a specific style instruction on that element and then immediately tries to retrieve that setting. Web browsers that understand the instruction will return something sensible; browsers that do not understand it will return nothing or "undefined". Modernizr uses the ...
To demonstrate specificity Inheritance Inheritance is a key feature in CSS; it relies on the ancestor-descendant relationship to operate. Inheritance is the mechanism by which properties are applied not only to a specified element but also to its descendants. Inheritance relies on the document tree, which is the hierarchy of XHTML elements in a page based on nesting. Descendant elements may ...
Polyfill may refer to: Polyester fiberfill, also known as Poly-fil or polyfill, a synthetic fiber; Polyfill (programming), in web development, code that implements a feature on web browsers that do not support the feature; Polyfill.io, a JavaScript library created by Andrew Betts that implemented Polyfill.
A CSS reset is a different concept from a CSS framework. A reset style sheet is only used to reset basic formatting. A reset style sheet is only used to reset basic formatting. In contrast, a CSS framework, which typically include pre-made style definitions for often-needed UI elements or a grid system, is used to speed up the development ...
HTML5 cannot provide animation within web pages. Additional JavaScript or CSS3 is necessary for animating HTML elements. Animation is also possible using JavaScript and HTML 4 [ 123 ] [ failed verification ] , and within SVG elements through SMIL , although browser support of the latter remains uneven as of 2011 [update] .
To see the animation, open media:Snow css3 animation example.svg. It should run in any modern browser or viewer. Recent versions of Chrome, Firefox, Microsoft Edge, Safari, and Opera all support SVG animated with SMIL. Other SVG animations can be found at Category:Animated SVG files.