CSS3 Transition
In CSS3, we can transition from one style to another in order to add a certain effect without using Flash animation or JavaScript. .
How does it work?
#CSS3 Transition is the effect of an element gradually changing from one style to another.
To achieve this, two things must be specified:
Specify the CSS property to add the effect
Specify the effect duration.
Transition effect applied to the width attribute, with a duration of 2 seconds:
div
{
transition: width 2s;
-webkit-transition: width 2s; /* Safari */
}
Note: If the period is not specified, the transition will have no effect because the default value is 0.
The effect will change when the value of the specified CSS property changes. A typical CSS property changes when the user mouses over an element:
Example
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
div
{
width:100px;
height:100px;
background: #d7ffb5;
transition:width 2s;
-webkit-transition:width 2s; /* Safari */
}
div:hover
{
width:300px;
}
</style>
</head>
<body>
<div></div>
<p>鼠标移动到 div 元素上，查看过渡效果。</p>
</body>
</html>Run the program to try it
Multiple changes
To add multiple styles of transformation effects, add attributes separated by commas:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
div {
width: 100px;
height: 100px;
background: #92ffc7;
-webkit-transition: width 2s, height 2s, -webkit-transform 2s; /* For Safari 3.1 to 6.0 */
transition: width 2s, height 2s, transform 2s;
}
div:hover {
width: 200px;
height: 200px;
-webkit-transform: rotate(180deg); /* Chrome, Safari, Opera */
transform: rotate(180deg);
}
</style>
</head>
<body>
<div>鼠标移动到 div 元素上，查看过渡效果。</div>
</body>
</html>Run Try the program
Transition attributes
The following table lists all transition attributes:
| Attribute | Description | CSS |
|---|---|---|
| transition | abbreviation attribute, use Used to set four transition properties in one property. | 3 |
| transition-property | Specifies the name of the CSS property that applies the transition. | 3 |
| transition-duration | Define how long the transition effect takes. The default is 0. | 3 |
| transition-timing-function | Specifies the time curve of the transition effect. The default is "ease". | 3 |
| transition-delay | Specifies when the transition effect starts. The default is 0. | 3 |
##Example
Use all transition attributes:<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
div
{
width:100px;
height:100px;
background: #ffedd7;
transition-property:width;
transition-duration:1s;
transition-timing-function:linear;
transition-delay:2s;
/* Safari */
-webkit-transition-property:width;
-webkit-transition-duration:1s;
-webkit-transition-timing-function:linear;
-webkit-transition-delay:2s;
}
div:hover
{
width:200px;
}
</style>
</head>
<body>
<div>过渡</div>
<p>鼠标移动到 div 元素上，查看过渡效果。</p>
<p><b>注意：</b> 过渡效果需要等待两秒后才开始。</p>
</body>
</html>Run the program and try it, but using the abbreviated transition attribute:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<style>
div
{
width:100px;
height:100px;
background:red;
transition:width 1s linear 2s;
/* Safari */
-webkit-transition:width 1s linear 2s;
}
div:hover
{
width:200px;
}
</style>
</head>
<body>
<div></div>
<p>鼠标移动到 div 元素上，查看过渡效果。</p>
<p><b>注意：</b> 过渡效果需要等待两秒后才开始。</p>
</body>
</html>Run the program and try it
