try this example

/* The animation code */
@keyframes example {
  0%   {background-color:red; left:0px; top:0px;}
  25%  {background-color:yellow; left:200px; top:0px;}
  50%  {background-color:blue; left:200px; top:200px;}
  75%  {background-color:green; left:0px; top:200px;}
  100% {background-color:red; left:0px; top:0px;}
}

/* The element to apply the animation to */
div {
  width: 100px;
  height: 100px;
  position: relative;
  background-color: red;
  animation-name: example;
  animation-duration: 4s;
}

Delay an Animation

The animation-delay property specifies a delay for the start of an animation.

The following example has a 2 seconds delay before starting the animation

See the Pen animation 3 by Arpit (@soniarpit) on CodePen.

Negative values are also allowed. If using negative values, the animation will start as if it had already been playing for N seconds.

In the following example, the animation will start as if it had already been playing for 2 seconds

try this example

div {
  width: 100px;
  height: 100px;
  position: relative;
  background-color: red;
  animation-name: example;
  animation-duration: 4s;
  animation-delay: -2s;
}

Set How Many Times an Animation Should Run

The animation-iteration-count property used to specify the number of times an animation should run.

The following example will run the animation 3 times before it stops:

See the Pen animation 4 by Arpit (@soniarpit) on CodePen.

The following example uses the value “infinite” to make the animation continue for ever

try this example

div {
  width: 100px;
  height: 100px;
  position: relative;
  background-color: red;
  animation-name: example;
  animation-duration: 4s;
  animation-iteration-count: infinite;
}

Run Animation in Reverse Direction or Alternate Cycles

The animation-direction property specifies whether an animation should be played forwards, backwards or in alternate cycles.

The animation-direction property can have the following values:

• normal - The animation is played as normal (forwards). This is default
• reverse - The animation is played in reverse direction (backwards)
• alternate - The animation is played forwards first, then backwards
• alternate-reverse - The animation is played backwards first, then forwards

The following example will run the animation in reverse direction (backwards):

See the Pen animation 5 by Arpit (@soniarpit) on CodePen.

change the value to animation-direction and try example

•  animation-direction: alternate;
• animation-direction: alternate-reverse;

Specify the fill-mode For an Animation

CSS animations do not affect an element before the first keyframe is played or after the last keyframe is played. The animation-fill-mode property can override this behavior.

The animation-fill-mode property specifies a style for the target element when the animation is not playing (before it starts, after it ends, or both).

The animation-fill-mode property can have the following values:

• none - Default value. Animation will not apply any styles to the element before or after it is executing
• forwards - The element will retain the style values that is set by the last keyframe (depends on animation-direction and animation-iteration-count)
• backwards - The element will get the style values that is set by the first keyframe (depends on animation-direction), and retain this during the animation-delay period
• both - The animation will follow the rules for both forwards and backwards, extending the animation properties in both directions

The following example lets the

div {
  width: 100px;
  height: 100px;
  background: red;
  position: relative;
  animation-name: example;
  animation-duration: 3s;
  animation-delay: 2s;
  animation-fill-mode: backwards;
}

div {
  width: 100px;
  height: 100px;
  background: red;
  position: relative;
  animation-name: example;
  animation-duration: 3s;
  animation-delay: 2s;
  animation-fill-mode: both;
}

div {
  animation-name: example;
  animation-duration: 5s;
  animation-timing-function: linear;
  animation-delay: 2s;
  animation-iteration-count: infinite;
  animation-direction: alternate;
}

div {
  animation: example 5s linear 2s infinite alternate;
}