animation

Baseline

Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since сентябрь 2015 г..

* Some parts of this feature may have varying levels of support.

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CSS свойство animation это короткая запись для animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode и animation-play-state.

Интерактивный пример

animation: 3s ease-in 1s infinite reverse both running slidein;

animation: 3s linear 1s infinite running slidein;

animation: 3s linear 1s infinite alternate slidein;

animation: 0.5s linear 1s infinite alternate slidein;

<section class="flex-column" id="default-example">
  <div id="example-element"></div>
</section>

#example-element {
  background-color: #1766aa;
  margin: 20px;
  border: 5px solid #333;
  width: 150px;
  height: 150px;
  border-radius: 50%;
}

@keyframes slidein {
  from {
    margin-left: -20%;
  }
  to {
    margin-left: 100%;
  }
}

Описание того, какие свойства являются анимируемые доступно; стоит отметить, что это описание также подходит для CSS переходов.

Начальное значение	как и у каждого из подсвойств этого свойства: `animation-name`: `none` `animation-duration`: `0s` `animation-timing-function`: `ease` `animation-delay`: `0s` `animation-iteration-count`: `1` `animation-direction`: `normal` `animation-fill-mode`: `none` `animation-play-state`: `running` `animation-timeline`: `auto`
Применяется к	все элементы
Наследуется	нет
Обработка значения	как и у каждого из подсвойств этого свойства: `animation-name`: как указано `animation-duration`: как указано `animation-timing-function`: как указано `animation-delay`: как указано `animation-direction`: как указано `animation-iteration-count`: как указано `animation-fill-mode`: как указано `animation-play-state`: как указано `animation-timeline`: a list, each item either a case-sensitive CSS identifier or the keywords `none`, `auto`
Animation type	Not animatable

Синтаксис

css

/* @keyframes duration | timing-function | delay |
   iteration-count | direction | fill-mode | play-state | name */
animation: 3s ease-in 1s 2 reverse both paused slidein;

/* @keyframes duration | timing-function | delay | name */
animation: 3s linear 1s slidein;

/* @keyframes duration | name */
animation: 3s slidein;

Порядок важен в каждом определении анимации: первое значение, которое может быть проанализировано как <time> присваивается animation-duration, и второй назначен animation-delay.

Note that order is also important within each animation definition for distinguishing animation-name values from other keywords. When parsing, keywords that are valid for properties other than animation-name whose values were not found earlier in the shorthand must be accepted for those properties rather than for animation-name. Furthermore, when serializing, default values of other properties must be output in at least the cases necessary to distinguish an animation-name that could be a value of another property, and may be output in additional cases.

Формальный синтаксис

animation = 
  <single-animation>#  

<single-animation> = 
  <'animation-duration'>              ||
  <easing-function>                   ||
  <'animation-delay-start'>           ||
  <single-animation-iteration-count>  ||
  <single-animation-direction>        ||
  <single-animation-fill-mode>        ||
  <single-animation-play-state>       ||
  [ none | <keyframes-name> ]         ||
  <single-animation-timeline>         

<animation-duration> = 
  [ auto | <time [0s,∞]> ]#  

<easing-function> = 
  <linear-easing-function>        |
  <cubic-bezier-easing-function>  |
  <step-easing-function>          

<animation-delay-start> = 
  <time>#  

<single-animation-iteration-count> = 
  infinite        |
  <number [0,∞]>  

<single-animation-direction> = 
  normal             |
  reverse            |
  alternate          |
  alternate-reverse  

<single-animation-fill-mode> = 
  none       |
  forwards   |
  backwards  |
  both       

<single-animation-play-state> = 
  running  |
  paused   

<keyframes-name> = 
  <custom-ident>  |
  <string>        

<single-animation-timeline> = 
  auto            |
  none            |
  <dashed-ident>  |
  <scroll()>      |
  <view()>        

<linear-easing-function> = 
  linear      |
  <linear()>  

<cubic-bezier-easing-function> = 
  ease              |
  ease-in           |
  ease-out          |
  ease-in-out       |
  <cubic-bezier()>  

<step-easing-function> = 
  step-start  |
  step-end    |
  <steps()>   

<scroll()> = 
  scroll( [ <scroller> || <axis> ]? )  

<view()> = 
  view( [ <axis> || <'view-timeline-inset'> ]? )  

<linear()> = 
  linear( [ <number> && <percentage>{0,2} ]# )  

<cubic-bezier()> = 
  cubic-bezier( [ <number [0,1]> , <number> ]#{2} )  

<steps()> = 
  steps( <integer> , <step-position>? )  

<scroller> = 
  root     |
  nearest  |
  self     

<axis> = 
  block   |
  inline  |
  x       |
  y       

<view-timeline-inset> = 
  [ [ auto | <length-percentage> ]{1,2} ]#  

<integer> = 
  <number-token>  

<step-position> = 
  jump-start  |
  jump-end    |
  jump-none   |
  jump-both   |
  start       |
  end         

<length-percentage> = 
  <length>      |
  <percentage>

Примеры

Посмотрите примеры CSS-анимаций.

Cylon Eye

Учитывая все специфичные для браузеров префиксы, вот анимация цилиндрического глаза, включающая линейные градиенты и анимацию, которая работает во всех основных браузерах:

html

<div class="view_port">
  <div class="polling_message">Listening for dispatches</div>
  <div class="cylon_eye"></div>
</div>

css

.polling_message {
  color: white;
  float: left;
  margin-right: 2%;
}

.view_port {
  background-color: black;
  height: 25px;
  width: 100%;
  overflow: hidden;
}

.cylon_eye {
  background-color: red;
  background-image: -webkit-linear-gradient(
    left,
    rgba(0, 0, 0, 0.9) 25%,
    rgba(0, 0, 0, 0.1) 50%,
    rgba(0, 0, 0, 0.9) 75%
  );
  background-image: -moz-linear-gradient(
    left,
    rgba(0, 0, 0, 0.9) 25%,
    rgba(0, 0, 0, 0.1) 50%,
    rgba(0, 0, 0, 0.9) 75%
  );
  background-image: -o-linear-gradient(
    left,
    rgba(0, 0, 0, 0.9) 25%,
    rgba(0, 0, 0, 0.1) 50%,
    rgba(0, 0, 0, 0.9) 75%
  );
  background-image: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.9) 25%,
    rgba(0, 0, 0, 0.1) 50%,
    rgba(0, 0, 0, 0.9) 75%
  );
  color: white;
  height: 100%;
  width: 20%;

  -webkit-animation: 4s linear 0s infinite alternate move_eye;
  -moz-animation: 4s linear 0s infinite alternate move_eye;
  -o-animation: 4s linear 0s infinite alternate move_eye;
  animation: 4s linear 0s infinite alternate move_eye;
}

@-webkit-keyframes move_eye {
  from {
    margin-left: -20%;
  }
  to {
    margin-left: 100%;
  }
}
@-moz-keyframes move_eye {
  from {
    margin-left: -20%;
  }
  to {
    margin-left: 100%;
  }
}
@-o-keyframes move_eye {
  from {
    margin-left: -20%;
  }
  to {
    margin-left: 100%;
  }
}
@keyframes move_eye {
  from {
    margin-left: -20%;
  }
  to {
    margin-left: 100%;
  }
}