CSS transition

• transition-property
• transition-timing-function
• transition-duration
• transition-delay
• animation
• animation-delay
• CSS3 Properties
• CSS properties

The CSS transition property is a shortcut property for defining CSS transitions. It combines the four transition properties into a single property. Specifically, it combines the following properties: transition-property, transition-duration, transition-timing-function, and transition-delay.

Note that order is important. The values must be provided in the order as specified in the "Syntax" section below.

The examples on this page include browser-specific properties that start with extensions such as -webkit-, -moz-, etc. This is for browser compatibility reasons. See the bottom of this article for more on this.

Syntax:	`transition: [<'transition-property'> \|\| <'transition-duration'> \|\| <'transition-timing-function'> \|\| <'transition-delay'> [, [<'transition-property'> \|\| <'transition-duration'> \|\| <'transition-timing-function'> \|\| <'transition-delay'>]]*`
Example	`transition: width 0.5s linear 1s /* W3C / -webkit-transition: width 0.5s linear 1s / Safari & Chrome / -moz-transition: width 0.5s linear 1s / Firefox / -ms-transition: width 0.5s linear 1s / Internet Explorer / -o-transition: width 0.5s linear 1s / Opera */` Note that this example includes various CSS extensions in addition to the W3C CSS3 property. This is for browser compatibility.
Try it yourself!	<!DOCTYPE html> <html> <head> <title>Example of the CSS3 animation-name Property</title> <style> .resize { background-color: orange; width:150px; height:20px; font-size:1em; font-family:Verdana,Arial,Helvetica,sans-serif; transition: width 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s, height 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s; -webkit-transition: width 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s, height 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s; -moz-transition: width 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s, height 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s; -ms-transition: width 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s, height 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s; -o-transition: width 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s, height 0.5s cubic-bezier(0.25, 0.1, 0.25, 1.4) 0s; } .resize:hover { width:370px; height:200px; } </style> </head> <body> <div class="resize">Hover over me...</div> </body> </html>
Possible Values:	<'transition-property'> Specifies which property to apply the transition to. For more information on this property, see `transition-property`. <'transition-duration'> Specifies how long the transition will last. For more information on this property, see `transition-duration`. <'transition-timing-function'> Specifies how the transition speeds up or slows down. Based on a cubic bézier curve. For more information on this property, see `transition-timing-function`. <'transition-delay'> Specifies how long to wait until the transition effect begins. For more information on this property, see `transition-delay`.
Initial Value:	See individual properties: `transition-property`, `transition-duration`, `transition-timing-function`, and `transition-delay`.
Applies to:	All elements, and the `:before` and `:after` pseudo elements
Inherited:	No
Media:	Interactive

Browser Compatibility

At the time of writing, CSS3 was still under development and browser support for many CSS3 properties was limited or non-existent. For maximum browser compatibility many web developers add browser-specific properties by using extensions such as -webkit- for Safari and Google Chrome, -ms- for Internet Explorer, -moz- for Firefox, -o- for Opera etc. As with any CSS property, if a browser doesn't support a proprietary extension, it will simply ignore it.

This practice is not recommended by the W3C, however in many cases, the only way you can test a property is to include the CSS extension that is compatible with your browser.

Be aware that if you choose to use the proprietary CSS extensions in a live environment, your code will not pass any W3C CSS validation, as the browser-specific properties are not valid W3C properties.

Many of the CSS3 examples on this website include these browser specific properties. If they weren't included, most of the examples wouldn't work for most users (at least, not until possibly years after the article was written).

The major browser manufacturers are working to support the W3C properties, and eventually, you will be able to omit these browser-specific properties.

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CSS transition

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