animation

类型	属性
<time>	animation-duration
<single-easing-function>	animation-timing-function
<time>	animation-delay
<single-animation-iteration-count>	animation-iteration-count
<single-animation-direction>	animation-direction
<single-animation-fill-mode>	animation-fill-mode
<single-animation-play-state>	animation-play-state
none、<custom-ident>、<string>	animation-name

.demo {
  animation: 3s ease-in 1s 2 reverse both paused slidein;
}