What is ease in ease out

Notice that when the cursor mouses out of the element, it will gradually change back to its original style.

Change Several Property Values

The following example adds a transition effect for both the width and height property, with a duration of 2 seconds for the width and 4 seconds for the height:

Specify the Speed Curve of the Transition

The transition-timing-function property specifies the speed curve of the transition effect.

The transition-timing-function property can have the following values:

• ease - specifies a transition effect with a slow start, then fast, then end slowly (this is default)
• linear - specifies a transition effect with the same speed from start to end
• ease-in - specifies a transition effect with a slow start
• ease-out - specifies a transition effect with a slow end
• ease-in-out - specifies a transition effect with a slow start and end
• cubic-bezier(n,n,n,n) - lets you define your own values in a cubic-bezier function

The following example shows some of the different speed curves that can be used:

Example

#div1 {transition-timing-function: linear;}
#div2 {transition-timing-function: ease;}
#div3 {transition-timing-function: ease-in;}
#div4 {transition-timing-function: ease-out;}
#div5 {transition-timing-function: ease-in-out;}

Try it Yourself »

Delay the Transition Effect

The transition-delay property specifies a delay (in seconds) for the transition effect.

The following example has a 1 second delay before starting:

Transition + Transformation

The following example adds a transition effect to the transformation:

More Transition Examples

The CSS transition properties can be specified one by one, like this:

Example

div {
  transition-property: width;
  transition-duration: 2s;
  transition-timing-function: linear;
  transition-delay: 1s;
}

Try it Yourself »

or by using the shorthand property transition:

CSS Transition Properties

The following table lists all the CSS transition properties:

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What is ease in out in CSS?