After 40% of the animation duration, the value of left is 150 pixels. In the first keyframe, shown at the beginning of the animation cycle, the left value of the animation is 100 pixels. There is no cascading within a rule if multiple keyframes specify the same keyframe selector value.įor example, the following rule contains keyframes for a transition or animation named "wobble". If there are any duplicates, the last keyframe specified inside the rule is used to provide the keyframe information for that time. This rule does not cascade therefore, an animation never derives keyframes from more than one rule.Īll of the values in selectors are sorted in increasing order by time. One microsecond is one-millionth of a second. Its a 64-bit value for microseconds since 00:00 UTC.
This timestamp format is used in web browsers such as Apple Safari, Google Chrome and Opera (Chromium/Blink). This rule is the last rule encountered in sorted rules order that matches the name of the transition. Convert WebKit/Chrome timestamps to human-readable date & Unix time. Properties that are not animating are ignored in this rule, with the exception of the -webkit-animation-timing-function property. The keyframe declaration consists of properties and values. The keyword to is equivalent to the value 100. The keyword from is equivalent to the value 0. The keyframes are specified by the block of property values declared for the selector. The selector is used to specify the percentage along the duration of the animation or transition that the keyframes represent. The keyframes selector consists of a list of percentage values or the keywords from or to. You set the animation name using the -webkit-animation-name property. This is followed by the name of the target animation and a set of style rules. For example setting background-position: right 5px bottom 5px the image will be positioned 5px from the right edge and 5px from the bottom.The CSS Apple extension specifies keyframes for CSS visual effect animation properties. In the past, you could only specify the image position relative from the top left corner, now you can specify an offset from the edges of the container. And these stylings are recognised by browser only with the vendor prefix, -webkit- being the one used for Chrome. In addition to this change, there’s now greater flexibility in positioning the image within the background. Answer (1 of 4): There are some stylings that vendors start implementing before it actually starts getting implemented.
Use background-image instead of the background shorthand property.There are several options that will provide an easy fix for this: In fooB, specifying a background-size in the background shorthand requires the position (0%) be specified first, followed by a forward slash then the background-size (50px 40px). background-size is specified inline after positionīackground : url (foo. # Correct way to specifying image size // background-size is specified after background The background shorthand property does not contain any size property and will therefore reset the background-size to its default value of auto auto. # Old way of doing things // background-size is reset to auto auto by the background shorthandīackground : url (foo. Because this was a fix to webkit, sites that tested in multiple browsers are likely not affected.
#WEBKIT CSS FOR ANDROID#
With Chrome for Android moving forward to current revisions on WebKit, this change is now rolling out in Android. This change brings Chrome and other WebKit browsers in compliance with the specification and matches the behavior of Firefox, Opera and Internet Explorer. With this change, the background shorthand property will reset the background-size to its default value of auto auto if it’s not set in the shorthand declaration. Earlier this year, WebKit updated the behavior of the CSS background shorthand property.
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