CSS Transitions

Guest · Post by **Guest** » Fri Oct 27, 2023 8:24 am

CSS Transitions

CSS Transitions
CSS transitions allows you to change property values smoothly, over a given duration.
Mouse over the element below to see a CSS transition effect:

CSS

In this chapter you will learn about the following properties:

transition
transition-delay
transition-duration
transition-property
transition-timing-function

Browser Support for Transitions
The numbers in the table specify the first browser version that fully supports the property.

Property

transition
26.0
10.0
16.0
6.1
12.1

transition-delay
26.0
10.0
16.0
6.1
12.1

transition-duration
26.0
10.0
16.0
6.1
12.1

transition-property
26.0
10.0
16.0
6.1
12.1

transition-timing-function
26.0
10.0
16.0
6.1
12.1

How to Use CSS Transitions?
To create a transition effect, you must specify two things:

the CSS property you want to add an effect to
the duration of the effect

Note: If the duration part is not specified, the transition will have no effect, because the default value is 0.
The following example shows a 100px * 100px red <div> element. The <div>
element has also specified a transition effect for the width property, with a duration of 2 seconds:

Example

div
{ width: 100px;  height: 100px;
background: red;  transition: width 2s;
}

The transition effect will start when the specified CSS property (width) changes value.
Now, let us specify a new value for the width property when a user mouses over the <div> element:

Example

div:hover
{
  width: 300px;
}

Try it Yourself »

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:

Example

div
{
  transition: width 2s, height 4s;
}

Try it Yourself »

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:

Example

div {
transition-delay: 1s;}
Try it Yourself »

Transition + Transformation
The following example adds a transition effect to the transformation:

Example

div {  transition:
width 2s, height 2s, transform 2s;}
Try it Yourself »

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:

Example

div
{

transition: width 2s linear 1s;
}

Try it Yourself »

Test Yourself With Exercises

Exercise:
Add a 2 second transition effect for width changes of the <div> element.

<style>
div {
width: 100px;
height: 100px;
background: red;
: ;
}

div:hover {
width: 300px;
}
</style>

<body>
<div>This is a div</div>
</body>

Submit Answer »
Start the Exercise

CSS Transition Properties
The following table lists all the CSS transition properties:

Property
Description

transition
A shorthand property for setting the four transition properties into a single property

transition-delay
Specifies a delay (in seconds) for the transition effect

transition-duration
Specifies how many seconds or milliseconds a transition effect takes to complete

transition-property
Specifies the name of the CSS property the transition effect is for

transition-timing-function
Specifies the speed curve of the transition effect

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+1

Reference: https://www.w3schools.com/css/css3_transitions.asp