Swapping State with CSS Keyframes
Say you want an element to be in one state for 9 seconds, and in another state for 1 second, on a loop. No tweening between the state, just a straight swap. I was wondering how to go about this other day, and Sarah Drasner showed me that you can use reallllllly short distances between keyframes to move from one state to another.
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Today, you have three very distinct approaches for animating things on the web: CSS animations, CSS transitions, and requestAnimationFrame. This distinction is necessary given what each approach does: CSS animations rely on pre-defined keyframes, CSS transitions animate CSS property value from one state to another...
In this week’s tip, we look at ways to handle vendor prefixes and a quick tip for refactoring your @keyframes into a more condensed format. We talked a lot about @keyframes in the video about the letter K. Here are some extra tips that you might find useful when working with CSS animations (and any current or future experimental properties).
CSS animations make it possible to animate transitions from one CSS style configuration to another. Animations consist of two components, a style describing the CSS animation and a set of keyframes that indicate the start and end states of the animation's style, as well as possible intermediate waypoints along the way.
When creating animations on the web, you can't really go far without running into CSS animations. What CSS animations do is pretty simple. They allow you to animate CSS properties by having you specify what your CSS properties will do at various points in time. These "points in time" have a very specific name. They are known as keyframes.
In this example, we will be going through CSS3 text animations. CSS animations make it possible to animate transitions from one CSS style configuration to another. Animations consist of two components, a style describing the CSS animation and a set of keyframes that indicate the start and end states of the animation’s style, as well as possible intermediate waypoints.
In this example we are talking about CSS pseudo-classes concept. A CSS pseudo-class is a keyword added to selectors that specifies a special state of the element to be selected. For example :hover will apply a style when the user hovers over the element specified by the selector. A pseudo-class is used to define a special state of an element. Outside of IE, they have great browser support. In IE land, even IE8, support is pretty barren. However, the IE9 has full support of them.
Learn how to fade in effect using CSS3 at keyframes rules. With CSS3 @keyframes rules, we can make a fade-in effect for any HTML element we want. In following code, we are just changing the opacity of an element on two different @keyframes states. We can increase the fade-in time by animation-duration property.
The W3C recently announced a Cascading Style Sheets (CSS) snapshot – a document that “collects together into one definition all the specs that together form the current state of Cascading Style Sheets (CSS) as of 2015. The primary audience is CSS implementers, not CSS authors, as this definition includes modules by specification stability, not Web browser adoption rate.” This motivated me to consider the relevance of CSS in today’s modern web developer community, and how best to implement today.
In contrast to standard CSS selectors, pseudo selectors allow you to alter the appearance of a state or fragment of an element: Pseudo-class selectors describe the state of an element, such as :hover or :empty. On a style sheet, they are preceded by a single colon. As their name suggests pseudo-element selectors control the presentation of a portion of content, such as the first line or letter of a paragraph.