animation-timing-function: /specify timing function/; *defines any variation in the speed of the animation. Animation-delay: Delay between the time the element is loaded and the. Listing 1 Creating a basic animation with an ease-in-ease-out timing functionResponsive. Each stop is a single number that ranges from 0 to 1. This is a Bézier timing function with the control points (0. See full list on blog. Example of an easing function that produces an ease-in effect. Es decir, se aplica al comienzo del. transition-timing-function: steps (4, end); By using steps () with an integer, you can define a specific number of steps before reaching the end. You can apply CSS to your Pen from any stylesheet on the web. The animation-timing-function property is one of the CSS3 properties. Using built-in CSS animations with Tailwind CSS. ease-in. For example, use md:ease-in-out to apply the ease-in-out utility at only medium screen sizes and above. The animation-timing-function property also accepts the following functions:. The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle. This is the default. What I was trying to achieve was the animation to start slow -> speed up -> and end slow when going back to 10px again. See animation iteration count for more examples. The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle. Within a keyframe, animation-timing-function is an at-rule. Transition-timing function - this is the timing function. To control an element’s transition-timing-function at a specific breakpoint, add a {screen}: prefix to any existing transition-timing-function utility. You can read more about this at this site:This effect is applied by using one of the timing functions described in CSS. Animation can be previewed online by pressing the play icon. The transition timing function class is used to specify the time an animation uses to change from one set of CSS transitions to another. They are all combined into a single transition timing string. Question: Identify an animation property that repeats the animation being played without stopping. 4, 0, 1, 1); animation-ease-outSpecifies the duration of the transition. An animation timing function defined within a keyframe block applies to that keyframe. This function is used if that is the effect. Timing function to specify a specific speed curve for the transition. ease-in-out - starts slowly and ends slowly. If all you need is a very simple bounce, it's as easy as just changing the transition function from ease-in to something else, such as a cubic-bezier. この加速曲線は、トランジションが行われるプロパティごとに 1 つの <easing-function> を用いて定義されます。. Les valeurs avec des mots-clés (ease, linear, ease-in-out, etc. the animation’s start and end delay. An ease-in timing function becomes ease-out, for example. This, in essence, lets you establish an acceleration curve so that the speed of the transition can vary over its duration. When the mouse stops hovering, the -webkit-animation property returns to its default value (blank), which means that the shake animation is removed, and everything returns to how it. CSS3. For example, use md:ease-in-out to apply the ease-in-out utility at only medium screen sizes and above. I've used the "Easy Ease" to create an okay looking transition, but I would like to use this timing function (from CSS): cubic-bezier(0. The transition-timing-function property specifies the speed of the transition throughout the element’s duration. This function. . It starts with a slow movement, then fast, and ends slowly. 1, 0. top { animation-name: top; animation-duration: 1. box { animation-name: move; animation-duration:. X軸移動アニメーションでイージングを比較; 5. 目次. A Cubic Bezier curve is defined by four points P0, P1, P2, and P3. 58,1)) step-start: Equivalent to steps(1, start) step-end: Equivalent to steps(1, end) steps(int,start|end) Specifies a stepping function, with two parameters. It should happen only after the 7 animations. The transition-duration property is simple to understand. The ease-in timing function has a slow start. It is a shorthand for animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, animation-play-state, and animation-timeline. Add the delay after the easing (AKA timing-function) value. Los posibles valores son una o varias <timing-function> (en-US). Let’s see those transition properties in action. An easy fix is to simply change the timing function to ease. You can create a "fake" delay between infinite animations purely with CSS. animation-duration: Sets the length of time that an animation should take to complete one cycle. The ease timing function is so nice, perhaps, because it’s a variant of ease-in-out. Controlling easing in CSS animations. The animation-range-start CSS property is used to set the start of an animation's attachment range along its timeline, i. The default value of the transition-timing function is ‘ease’. The state of the element will not vary gradually. You don’t necessarily have to simulate ease-in-out manually with percentages. animation-timing-function: linear. Easing functions may be specified on individual keyframes in a @keyframes rule. Each of them has an effect property, and in your case, they are all of the type KeyframeEffect. animation web animation api css; Subscribe to get our latest content by email. Here is the code I am trying. This tiny demo is trying to slide up/down a div with the ease-in timing/easing function. With that in mind, animation timing functions can also be changed within the keyframe chains themselves if needed. animation-delay: value; Xem Demoease-in-out: Specifies a transition effect with a slow start and end (equivalent to cubic-bezier(0. 25, 0. the duration of the animation. hubspot. The transition-timing-function property specifies the speed curve of the transition effect. Try changing some of these properties, and see what happens. 8 0. Trusted by 200,000+ folks. For example, if we wanted to animate a bouncing ball, and we wanted a good . Your code is incorrect. In other words, the animation-timing-function property specifies the speed for implementing the animation at various intervals of its duration. box { animation-name: move; animation-duration: 2000ms; animation-timing-function: ease-in; } Let's recap on some established CSS easing techniques. Animation Timing Functions. animation-timing-function: ease-in-out; Like ease, but more pronounced. Multiple animations. Examples are linear, ease, ease-in, ease-out, ease-in-out, or cubic-bezier. The one problem with this is that it is harder to change the timing. The ease part of the styling is explained here. The default transition-timing-function in CSS (the easing) is ease. The duration controls how long the animation takes to run from start to finish. ease-out. When it comes to animating elements on a web page, the CSS property animation-timing-function is an another important property to understand. If you supply multiple values, each value applies to the corresponding property specified in transition-property. Use the animation-timing-function property in conjunction with the animation property to specify the timing of an animation. This will result in an animation that spins first one way and then the other. You’ll see these in action in the next section. animation-timing-function: linear; animation-timing-function: ease-in-out; animation-timing-function can be used with many more keyword or function. animation-timing-function: Specifies the timing of the animation; or how it ‘flows’ through the keyframes. ease. The ‘ease-in-out’ will give the animation a more playful feel. ,fn) with a custom timing function. The count to determinate if it is an even or an odd iteration starts at one. Adding Animation Duration Classes to. The animation shorthand CSS property applies an animation between styles. The animation-timing-function property can have the following values: ease - Specifies an animation with a slow start, then fast, then end slowly (this is default) linear - Specifies an animation with the same speed from start to end; ease-in - Specifies an. ease-in-out: Timing function. This, in essence, lets you establish an acceleration curve so that the speed of the transition can vary over its duration. Suppose an element has a timing function of ease-in; it means it starts slow and finishes fast. animation-timing-function = <easing-function> # <easing-function> = linear | <linear-easing-function> | <cubic-bezier-easing-function> | <step-easing-function> <linear. The accent-color is only applied to user-interface controls that use an. Now that we can use CSS transitions in all the modern browsers, let’s make them pretty. The function moves two divs slowly up and down similarly to a slot machine. This lets you establish an acceleration curve, so that the speed of the animation can vary over its duration. On the other hand, the ease-out timing function starts the animation quickly and then decelerates. The animation property is used to animate (gradually change from one style to another) CSS properties with discrete values: layout properties (border, height, width, etc. That is, the change happens slowly both at the beginning and end, and speeds up only in the middle somewhere. 5s; animation-timing-function: elastic(7, 1. 0, 1. This will mean when the user rolls over that the arrow will rotate smoothly in and then out on roll off. Note: This is reusing the same classes as transition-timing-function, this may change in the future if it turns out to cause friction. animation-timing-function: ease-out;} to {background-color: rgba(255,204,0,0);}} You can set animation-timing-function on each keyframe except the last one (100% or to). animation. Identify an animation property that repeats the animation being played without stopping. The Safari position on the proposal is positive. background, transform; transition-timing-function: ease-out, ease-in, linear, ease-in-out; transition-delay: 0, 0, 0, 1s; transition. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself. Similarly, ease-out means it starts fast but finishes slowly. g. In other words, t is the same as animation progress. <time>. This acceleration curve is defined using one <easing-function> for each property to be transitioned. This makes the beginning and ending of each animation a little slower than the middle part, which adds a more natural look to some animations. Rotating loader. transition-timing-function. Combined animations-- EXAMPLE HERE. animation. CSS Easing / Cubic-Bezier Function Generator is a free online tool for web developers that lets you build custom easing timing functions for transitions and animations. The animation timing function ease will cause the animation to start slow at 0 -> speed up -> slow down to -10px -> speed up -> slow down to 0. If no timing function is specified for. Transitions, on the other hand, are a way to smoothly change the value of a CSS property over a period of time, in response to a user. In addition, timing functions are also reversed; for example, an ease-in animation is replaced with an ease-out animation when played in reverse. The CSS animation-timing-function defines the pace of your. CSS3 animations…The transition-timing-function property, normally used as part of transition shorthand, is used to define a function that describes how a transition will proceed over its duration, allowing a transition to change speed during its course. In other words, the timing function is applied at the start of. This module is used by Animated. Q&A for work. my-element { animation-timing-function: steps(10, end); } The first argument is how many. If no animation-timing-function is specified on a keyframe, the corresponding value of animation-timing-function from the element to which the animation is applied is used for that keyframe. Result: CSS Code: #myDIV { animation-timing-function: ease-in-out; } Click the property values above to see the result. g. Set the 'delay' with an high value on the element (not :hover). 3. About the above-mentioned examples, the animation is best applied during user interaction, e. The animation reverses direction each cycle, with the first iteration being played backwards. That accent color is not used by every user-interface control nor in every state of the control. The nature of these keyframe animations can be altered by tweaking its properties such as duration, easing function, direction, delay, and more. 5s to 1s delay between each bounce, we can do something like: The animation CSS property is a shorthand property for the various animation properties: animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state. ease timing function. They also allow the animations to run automatically and continuously rather than just in response to mouse events. 0) and (0. The latter can be created using a tool such as this tool by Lea Verou. The easing function will run forwards for half of the duration, then backwards for the rest of the duration. No added library like GSAP or Velocity. move { animation: move 10s steps (10) infinite alternate; } The math works out nicely there. animation-name: Specifies the name of the keyframe you want to bind to the selector: animation-duration: Specifies how many seconds or milliseconds an animation takes to complete: animation-timing-function: Specifies the speed curve of the animation: animation-delay: Specifies a delay before the animation will start: animation-iteration. In truth, timing functions like ease-in are more subtle than depicted, but I wanted to emphasize the effect to make it easier to understand. It is a shorthand for animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, animation-play-state, and animation-timeline. The animation has the same speed from start to end: ease: Default value. The acceleration and deceleration of transitions is controlled using the transition-timing-function property. animation-timing-function: ease-out; } } In this case the first half of the animation will be linear, and the second half would use the ease-out timing function. I'm following this tutorial here. The ease timing function is the default of any transition in CSS. The default timing is easy, which begins slowly, immediately speeds up, and then gradually decreases at the end. Connect and share knowledge within a single location that is structured and easy to search. animation-delay: durasi tunda ebelum animasi kita mulai. For understanding the animation properties a -webkit- prefix. The standard easeIn, easeOut. Within a keyframe, animation-timing-function is an at-rule-specific. The animation starts quickly, and decelerates gradually until the end. animation: colorchange 1s. The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle. This will make your element use the keyframes from 0% to 100% for the specified duration then go from 100% to 0% after the first iteration is complete. You may specify multiple easing functions; each one will be applied to the corresponding property as specified by. zero or one <easing-function> value representing the easing function to use; zero, one, or two <time> values. ease. 2% } 100% { offset-distance: 100%; opacity: 0; } }3. Syntax. In other words, the animation-timing-function property specifies the speed for implementing the animation at various intervals of its duration. ease-in: starts slow and then speeds up as it moves to the end. 0. easing: Easing. Then speeds it up and ends it slowly. Here's a gif of the behaviour (it's a bit ugly because of my gif-record-software, but the pause is the thing I wish to highlight here): . This means that if an element isn’t moving at first and then starts to move, it will do so instantly, as if it didn’t even need to accelerate. Within a keyframe, animation-timing-function is an at-rule-specific. bounce, }); Available functions: back provides a simple animation where the object goes slightly back before moving forward. We give the SVG an ID of loading-spinner, then define the animation and transition. Avoid significant Easing In (slow acceleration) with animations that were triggered by user actions as. 5 = 0. In the to, give another animation: @keyframes spin { from { transform: rotate (0deg); } to { transform: rotate (360deg); animation: ease; } } @keyframes ease { } You might need to tackle the iteration count here. Description. To do this, we define the animation name, duration and iteration count. Now, to make the transitions properly parabolic, you need to use parabolic animation-timing-function settings. 06. Easing functions may be specified on individual keyframes in a @keyframes rule. Unsubscribe at any time. This value sets the animation to a slow start then after a time period the speed increases and before it ends the speed again becomes slow. In this example, the slide animation is applied to a div element, causing it to move back and forth horizontally indefinitely with a duration of 2 seconds and an easing timing function. Example: width 1s linear 1s. As we learned earlier, we see that this results in a value that is also between 0 and 1 (e. Result: CSS Code: #myDIV { animation-timing-function: ease; } Click the property values above to. h1 { -webkit-transition:all 0. animate { background. cubic-bezier(0. Easing animation is usable on User Interface (UI) elements such as the following: Buttons. We set the animation name; duration; iteration count and timing function. Below is a snippet of what the shorthand and longhand variants might look like: /* shorthand */ #foo { animation: bobble 2s ease-in infinite. For example, if we wanted to animate a bouncing ball, and we wanted a good . The right kind of easing is crucial for making animations look natural and life-like. css . I am working on a game that needs an animation to play when I call a function. For the vertical, bouncing, animation, we're going to make use of the ease-in and ease-out timing functions to simulate the effects of a gravity field:The cubic-bezier () function defines a Cubic Bezier curve. 25, 0. the animation’s fill. In CSS, we use the animation-timing-function property to apply easing to an element's animation. A. Let’s see more of them. /* The ease keyword and its cubic-bezier () equivalent */ transition-timing-function: cubic-bezier (. 25, 1); The curve for. The animation CSS property is a shorthand property for the various animation properties: animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state. ), properties defining position (left, top), font sizes, colors and opacities. The time that an animation takes to complete one cycle. The timing function can be one of a few predefined keywords, or a cubic bezier function. Easing functions can change the look and feel of an animation by affecting the rate, or speed, of an animation. この加速曲線は、トランジションが行われるプロパティごとに 1 つの <easing-function> を用いて定義されます。. Timing functions may be specified on individual keyframes in a @keyframes rule. animation-timing-function: linear (0, 0. キーフレームに animation-timing-function が指定されていない場合、そのキーフレームにはアニメーションが適用された要素から animation-timing-function の適切な値が. If no animation-timing-function is specified on a keyframe, the corresponding value of animation-timing-function from the element to which the animation is applied is used for that keyframe. animation-name: falling, laydown; animation-duration: 2000ms, 1000ms; animation-timing-function: ease-in, ease-out; animation-iteration-count: 1, 1; It is playing the second animation, then the first and finally the second one again. These functions are often called easing functions. the animation’s easing (or timing function). Easing Functions. . ease is the animation-timing-function property's<easing-function> は CSS のデータ型で、数値が変化する速度を記述する数学的な関数を表します。 この 2 つの値の間の遷移は様々な形で適用される可能性があります。アニメーション中に値が変化する速さを記述するために使用されることがあります。animation-timing-function (en-US): ease; animation-delay: 0s; animation-iteration-count (en-US): 1; animation-direction: normal; animation-fill-mode: none; animation-play-state (en-US): running; animation-timeline (en-US): auto; 적용대상: all elements: 상속: no: 계산 값: as each of the properties of the shorthand: animation-name (en-US. Think how nice it would be to have a simple elastic function that accepts these three arguments and produces a clean and beautiful elastic ease, like so:. 0. Note: animation-range-start is included. A transition timing function is a mathematical algorithm that determines how the transition progresses from its initial state to its final state. Simply add the animation-delay property to your code: . 10. Something in the context of CSS timing-functions is always a CSS property that can be animated - that's a property that can be denoted with a numerical value, like: width, height. . You may specify multiple easing functions; each one will be applied to the corresponding property as specified by. Result: CSS Code: #myDIV { animation-timing-function: ease; } Click the property values above to see the result. animate() method: js. Notice that both transforms are controlled by the –bounce-distance inside a calc () function and notice that I used a fallback value when calling the custom property. The transition stays at the initial state until the end, when it instantly jumps to the final state. 16. This is ridiculously fun, of course. css. The steps is one of the timing ( easing) functions available ( and you cannot use multiple easing functions ). Easing functions can change the look and feel of an animation by affecting the rate, or speed, of an animation. Quadratic easing functions. animation-timing-function: ease-out; or. g. static var linear: Animation Timing Function. js, we have a property named easing that we can use to specify the easing function to use for the animation. That might not be the clearest explanation, but the syntax might help clarify. If no value is provided, the default value of 0s is used, in which. 1. Timing functions can also be specified as part of the transition shorthand property. A cubic-bezier timing-function describes the change of something over a period of time, so the coordinates of our handles are (time, something) pairs. Definition and Usage. animation-iteration-count - default 1. The animation-composition property helps to specify how to combine the underlying value with the effect value. ease-in-out - starts slowly and ends slowly. the Playback rate of the animation. When you’re happy, snag your code and off you go. We can either animate the falling part with ease-in, or the rising part with ease-out. All the Timing Functions Defined in CSS. top { animation-name: FadeInOut; animation-timing-function: ease-in-out; animation-iteration-count: infinite; animation-duration: 10s; animation-direction: alternate; } Creating Image Effects Dynamically. The animation-composition property specifies the operation to perform to produce the final effect value after compositing the. These two timing-functions are symmetrical. Emotion, scaling attributes, and weight can all be used to implement. First image start with 0s (0s - 30s) Second image start with 30s (30s - 60s) Third image start with 60s (60s - 90s) Description. 1, . bounce, }); Available functions: back provides a simple animation where the object goes slightly back before moving forward. This style places the frames farther apart at the beginning of the animation and closer together at the conclusion. 12: Iteration. 885, 0. The trick is, put your transition in the initial state, in this case div#welcome h1 img then you put the end result in the action state, that is, the :hover style. The common ones are ease-in, ease-out, ease-in-out, ease, and linear, or you can specify your own using cubic-bezier(). ease-in: animation. pulse { animation-name: pulseKey; animation-duration: 2s; animation-iteration-count: infinite; animation-timing-function: ease-out; }Easing functions may be specified on individual keyframes in a @keyframes rule. To learn more, see the Color Schemes documentation. This function accepts a number of stops, separated by commas. ease. In CSS, cubic-bezier is a timing function that defines the acceleration and deceleration of an animation or transition over time. 25, 1);Try it. The steps easing function. delay – how much time (if any) to wait before kicking off the animation sequence. The accepted strings are the GreenSock easing functions. animation-direction: sets the direction of the animation after the cycle. ease-out. The animation CSS property is a shorthand property for the various animation properties: animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state. If no animation-timing-function is specified on a keyframe, the corresponding value of animation-timing-function from the element to which the animation is applied is used for that keyframe. The animation has a slow start, then fast, before it ends slowly: ease-in: The animation has a slow start: ease-out: The animation has a slow end: ease-in-out: The animation has both a slow start and a slow end: cubic-bezier(n, n, n, n) Define your own values in the cubic. ) each represent cubic Bézier curve with fixed four point values, with the cubic-bezier(). The trick is, put your transition in the initial state, in this case div#welcome h1 img then you put the end result in the action state, that is, the :hover style. animation-timing-functionの設定方法 2. The idea is to loop over a set of keys and generate a block of CSS with linear () easings. box { animation-timing. Emulating ease-in-out. A timing function that produces a gradual starting and ending transition. ease-out. The speed curve defines how the animation progresses through the duration of each cycle. // 예) animation: name duration timing-function delay iteration-count direction div { animation: bgmove 10s 1s 1 ease-in alternate ; } css animation 예제 위 이미지와 같이 animation 속성을 이용하여 div 영역에 있는 이미지 배경이 위 아래로 움직이는 모션을 예제로 보여드리겠습니다. CSS Syntax animation-timing-function: linear|ease|ease-in|ease-out|ease-in-out|step-start|step-end|steps (int,start|end)|cubic-bezier ( n, n, n, n )|initial|inherit; The animation-timing-function uses a mathematical function, called the Cubic Bezier curve, to make the speed curve. First image start with 0s (0s - 30s) Second image start with 30s (30s - 60s) Third image start with 60s (60s - 90s)Easing functions may be specified on individual keyframes in a @keyframes rule. linear: The linear timing function provides a constant speed throughout the animation or transition. It wouldn't move at the same speed the whole time: it would probably accelerate rapidly to its maximum velocity, before gradually slowing down and coming to a stop (known as cubic-bezier easing). For top, y is 8 and height is 4, so the center is at 8 + (4 / 2) = 10. transition-timing-function. 2 Answers. It moves up at 33% and down at 66%. In other words, the timing function is applied at the start of the keyframe and at the end of the keyframe. transition-timing-function: step-end; The transition stays at the initial state until the end, when it instantly jumps to the final state. 45); [ See working in JSFiddle] _____ CSS3 animation-timing-function 属性 实例 从开始到结束以相同的速度播放动画: [mycode3 type='css'] animation-timing-function:linear; -webkit. animation-delay : xác định độ trễ của mỗi lượt chuyển động. but the cubic bezier curves associated with these two keywords are not exactly parabolas. js are necessary. 42, 0, 0. The ease keyword is the default value of the CSS timing-function property, and it is actually quite similar to the previous one, although it eases in at a faster rate before easing out much more gradually. animation-timing-function: linear. ease-in-out. com transition-timing-function linear timing function. ease. The advantage of this approach is that you can change the duration and timing-function which can be nice for easing out some animation (Like a rotating logo for example). 0. Best Practices. in') ease (0. slideRight { animation-name: slideRight; animation-duration: 1s; animation-timing-function: ease-in-out; visibility: visible !important; /* New code here: */ animation-delay: 1s; } It's important to note that animation-delay only delays. Description. With easing can simulate momentum and breathe life into it. Within a keyframe, animation-timing-function is an at-rule-specific. I want to animate something in After Effects, and I know how to set the animation except for the timing function. ease-out: This. ease-in-out. Currently when I run it just appears at the top of the page. In CSS, we have done that by using the CSS transition-timing-function. The state of the element will not vary. If no animation-timing-function is specified on a keyframe, the corresponding value of animation-timing-function from the element to which the animation is applied is used for that keyframe. The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle. Available values include:The multi-argument constructor (see above) creates a completely new KeyframeEffect object instance. Adding animations and transitions to websites has been a lot of work, but this article will show you how to easily achieve those tasks with Tailwind CSS. For. This will mean when the user rolls over that the arrow will rotate smoothly in and then out on roll off. ease-in-out. It defines the total duration of a transition from state A to state B, whether the transition involves scaling, distorting, rotating or modifying the style of an element. The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle. The first parameter specifies the number of intervals in the function. Any help is appreciated. Within a keyframe, animation-timing-function is an at-rule-specific. In this interactive demo, we want the graphs of the f and g functions to be as close as possible to the dashed lines, which represent the ease-in timing function (below the identity line) and the ease-out timing function (above the identity line). It appears as if the element bounces off the left side. Controlling the easing curve. If you don’t quite like the easing, grab a handle and fix it. There are three timing properties you can tune for every animated transition: the duration, the delay, and the easing function. so I'm trying to fade 3 images, one on top of each other slowly so you can see each image for a few secs before the next one fades on top. It starts slowly, accelerates through the middle part. transition-timing-function: ease; transition-timing-function: linear; transition-timing-function: step-end; transition-timing-function: steps(4, end); I hope in the future we get more. Description. Ceaser CSS Easing Animation Tool. animation-delay: the time between the element being loaded and the. animation-timing-function: linear: animation-timing-function: linear; Chuyển động sẽ cùng tốc độ từ lúc bắt đầu tới lúc kết thúc. Use the ease-{timing} utilities to control an element’s easing curve. Anime. animation-timing-function: It specifies how animations make transitions through keyframes. Within a keyframe, animation-timing-function is an at-rule-specific. I believe you're looking for animation-direction:alternate, but your question is not very clear. I am trying to run this in chrome. 58, 1). How you calculate it is simple: 100 / #_seconds = percentage in animation for 1 sec e. Easing functions may be specified on individual keyframes in a @keyframes rule. Animations with the ease function start slowly, speed up, and then end slowly. Basic Usage Changing animation timing function . The syntax for CSS animation-duration is simple – you just need to define the preferred duration in seconds:. Initially we had a bounce effect (below) (with values 0.