CSS3 Animation
CSS3 Animation
CSS3, we can create animations, which can replace many web page animated images, Flash animations, and JAVAScripts.
CSS3 @keyframes rules
To create CSS3 animations, you will have to understand the @keyframes rules.
@keyframes rule is to create animations. Specify a CSS style and animation within the @keyframes rule that will gradually change from the current style to the new style.
CSS3 Animations
When creating animations in @keyframes, bind it to a selector, otherwise the animation will have no effect.
Specify that at least two CSS3 animation properties are bound to a selector:
Specify the name of the animation
Specify the duration of the animation
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
div
{
width:100px;
height:100px;
background:red;
animation:myfirst 5s;
-webkit-animation:myfirst 5s; /* Safari and Chrome */
}
@keyframes myfirst
{
from {background:red;}
to {background:yellow;}
}CSS3 animation properties
The following table lists the @keyframes rules and all animation properties:
Properties CSS
@keyframes animation. 3
# Animation The abbreviation attributes of all animation attributes, except the Animation-Play-State attribute. 3
animation-name specifies the name of @keyframes animation. 3
# Animation-Duration stipulates that animation completes the second or milliseconds spent in a cycle. The default is 0. 3
animation-timing-function Specifies the speed curve of the animation. The default is "ease". 3
animation-delay specifies when the animation starts. The default is 0. 3
# Animation-Iteration-Count specifies the number of times the animation is played. The default is 1. 3
animation-direction specifies whether the animation plays in reverse in the next cycle. The default is "normal". 3
animation-play-state specifies whether the animation is running or paused. The default is "running". 3
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
div
{
width:100px;
height:100px;
background:red;
position:relative;
animation:myfirst 5s linear 2s infinite alternate;
/* Firefox: */
-moz-animation:myfirst 5s linear 2s infinite alternate;
/* Safari and Chrome: */
-webkit-animation:myfirst 5s linear 2s infinite alternate;
/* Opera: */
-o-animation:myfirst 5s linear 2s infinite alternate;
}
@keyframes myfirst
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
@-moz-keyframes myfirst /* Firefox */
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
@-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
@-o-keyframes myfirst /* Opera */
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
</style>
</head>
<body>
<p><b>注意:</b> 该实例在 Internet Explorer 9 及更早 IE 版本是无效的。</p>
<div></div>
</body>
</html>@-webkit-keyframes myfirst /* Safari and Chrome */
{
from {background:red;}
to {background:yellow;}
}
</style>
</head>
<body>
<p><b>注意:</b> 该实例在 Internet Explorer 9 及更早 IE 版本是无效的。</p>
<div></div>
</body>
</html>What is CSS3 animation?
Animation is the effect of gradually changing an element from one style to another.
You can change as many styles as you want as many times as you like.
Please use percentage to specify the time when the change occurs, or use the keywords "from" and "to", which are equivalent to 0% and 100%.
0% is the start of the animation, 100% is the completion of the animation.
For best browser support, you should always define 0% and 100% selectors.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
div
{
width:100px;
height:100px;
background:red;
animation:myfirst 5s;
-moz-animation:myfirst 5s; /* Firefox */
-webkit-animation:myfirst 5s; /* Safari and Chrome */
-o-animation:myfirst 5s; /* Opera */
}
@keyframes myfirst
{
0% {background:red;}
25% {background:yellow;}
50% {background:blue;}
100% {background:green;}
}
@-moz-keyframes myfirst /* Firefox */
{
0% {background:red;}
25% {background:yellow;}
50% {background:blue;}
100% {background:green;}
}
@-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {background:red;}
25% {background:yellow;}
50% {background:blue;}
100% {background:green;}
}
@-o-keyframes myfirst /* Opera */
{
0% {background:red;}
25% {background:yellow;}
50% {background:blue;}
100% {background:green;}
}
</style>
</head>
<body>
<div></div>
<p><b>注释：</b>当动画完成时，会变回初始的样式。</p>
<p><b>注意:</b> 该实例在 Internet Explorer 9 及更早 IE 版本是无效的。</p>
</body>
</html>