CSS知识总结（九）-html tutorial-php.cn

CSS常用样式

10.自定义动画

　　1）关键帧（keyframes）

　　　　被称为关键帧，其类似于Flash中的关键帧。

　　　　在CSS3中其主要以“@keyframes”开头，后面紧跟着是动画名称加上一对花括号“{…}”，括号中就是一些不同时间段样式规则。

　　　　语法：@keyframes animationname {keyframes-selector {css-styles;}}

　　　　animationname：定义动画的名称。

　　　　keyframes-selector：以百分比来规定改变发生的时间，或者通过关键词 "from" 和 "to"，等价于 0% 和 100%。建议定义百分比选择器。

　　　　css-styles：通过 @keyframes 规则，您能够创建动画，就是将一套 CSS 样式逐渐变化为另一套样式，并且能够多次改变这套 CSS 样式。

　　　　兼容性：目前浏览器都不支持@keyframes规则，需要加上前缀"-moz-","-o-","-webkit-"。

　　　　例子：

<span style="color: #800000;">@-webkit-keyframes FromLeftToRight</span>{   <span style="color: #008000;">/*</span><span style="color: #008000;"> Safari 和 Chrome </span><span style="color: #008000;">*/</span><span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{    <span style="color: #008000;">/*</span><span style="color: #008000;"> Firefox </span><span style="color: #008000;">*/</span><span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}
@-o-keyframes FromLeftToRight</span>{      <span style="color: #008000;">/*</span><span style="color: #008000;"> Opera </span><span style="color: #008000;">*/</span><span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}</span>

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　　2）动画名称（animation-name）

　　　　元素所应用的动画名称，必须与规则@keyframes配合使用，因为动画名称由@keyframes定义。

　　　　animation-name ：none |

　　　　：定义一个或多个动画名称，如果是多个，用逗号分隔。

　　　　例子：

<span style="color: #800000;">div</span>{<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -o-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;
}<span style="color: #800000;">
@-webkit-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}
@-o-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">800px</span>;}<span style="color: #800000;"> 
}</span>

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　　3）动画时间（animation-duration）

　　　　指定对象动画的持续时间

　　　　animation-duration：

　　例子源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.duration</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#000</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;">relative</span>;<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -moz-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">3s</span>;
}<span style="color: #800000;">
@-webkit-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}</span>

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<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>请按F5刷新动画（矩形用3秒向右移动500px）<span style="color: #0000ff;"></span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="duration"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span>

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　　效果：

请按F5刷新动画（矩形用3秒向右移动500px）

　　4）动画的过渡速度（animation-timing-function）

　　　　①ease : 默认值，逐渐变慢(等于 cubic-bezier(0.25,0.1,0.25,1))

　　　　②linear : 匀速过渡效果(等于 cubic-bezier(0,0,1,1))

　　　　③ease-in : 加速的过渡效果(等于 cubic-bezier(0.42,0,1,1))

　　　　④ease-out : 减速的过渡效果(等于 cubic-bezier(0,0,0.58,1))

　　　　⑤ease-in-out : 加速然后减速(等于cubic-bezier (0.42, 0, 0.58, 1))

　　　　⑥cubic-bezier(n,n,n,n)：在 cubic-bezier 函数中定义自己的值，可能的值是 0 至 1 之间的数值。

　　例子源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.function</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#ccc</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;">relative</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;">5px</span>;<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -moz-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">3s</span>;
}<span style="color: #800000;">
.ease-in</span>{<span style="color: #ff0000;">
    -webkit-animation-timing-function</span>:<span style="color: #0000ff;">ease-in</span>;<span style="color: #ff0000;">
    -moz-animation-timing-function</span>:<span style="color: #0000ff;">ease-in</span>;<span style="color: #ff0000;">
    animation-timing-function</span>:<span style="color: #0000ff;">ease-in</span>;
}<span style="color: #800000;">
.ease-out</span>{<span style="color: #ff0000;">
    -webkit-animation-timing-function</span>:<span style="color: #0000ff;">ease-out</span>;<span style="color: #ff0000;">
    -moz-animation-timing-function</span>:<span style="color: #0000ff;">ease-out</span>;<span style="color: #ff0000;">
    animation-timing-function</span>:<span style="color: #0000ff;">ease-out</span>;
}<span style="color: #800000;">
@-webkit-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}</span>

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<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>请按F5刷新动画（两个矩形同样在3秒用不同的速率向右移动500px）<span style="color: #0000ff;"></span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="function ease-in"</span><span style="color: #0000ff;">></span>ease-in<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="function ease-out"</span><span style="color: #0000ff;">></span>ease-out<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span></span>

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　　效果：

请按F5刷新动画（两个矩形同样在3秒用不同的速率向右移动500px）

ease-in

ease-out

　　5）动画延迟时间（animation-delay）

　　　　指定对象动画延迟的时间

　　　　animation-delay：

　　例子源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.delay</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#000</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;">relative</span>;<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -webkit-animation-delay</span>:<span style="color: #0000ff;">2s</span>;<span style="color: #ff0000;">
    -moz-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -moz-animation-delay</span>:<span style="color: #0000ff;">2s</span>;<span style="color: #ff0000;">
    animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    animation-delay</span>:<span style="color: #0000ff;">2s</span>;
}<span style="color: #800000;">
@-webkit-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}</span>

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<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>请按F5刷新动画（刷新后请等待2秒启动动画）<span style="color: #0000ff;"></span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="delay"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span>

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　　效果：

请按F5刷新动画（刷新后请等待2秒启动动画）

　　6）动画执行次数（animation-iteration-count）

　　　　animation-iteration-count：infinite |

　　　　infinite表示无限次数，number指定循环次数。

　　例子源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.infinite</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#000</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;">relative</span>;<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -webkit-animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;<span style="color: #ff0000;"> 
    -moz-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -moz-animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;<span style="color: #ff0000;"> 
    animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;
}<span style="color: #800000;">
@-webkit-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}</span>

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<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>动画全自动无限循环播放<span style="color: #0000ff;"></span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="infinite"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span>

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　　效果：

动画全自动无限循环播放

　　7）动画的顺序（animation-direction）

　　　　设置对象动画在循环中是否反向运动

　　　　animation-direction : normal | reverse | alternate | alternate-reverse

　　　　normal：正常方向

　　　　reverse：反方向运行

　　　　alternate：动画先正常运行再反方向运行，并持续交替运行

　　　　alternate-reverse：动画先反运行再正方向运行，并持续交替运行

　　例子源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.box</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">50px</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#ccc</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;">5px</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;">relative</span>;<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FormLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-name</span>:<span style="color: #0000ff;">FormLeftToRight</span>;<span style="color: #ff0000;">
    animation-name</span>:<span style="color: #0000ff;">FormLeftToRight</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">5s</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">5s</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">5s</span>;<span style="color: #ff0000;">
    -webkit-animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;<span style="color: #ff0000;">
    -moz-animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;<span style="color: #ff0000;">
    animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;
}<span style="color: #800000;">
.reverse</span>{<span style="color: #ff0000;">
    -webkit-animation-direction</span>:<span style="color: #0000ff;">reverse</span>;<span style="color: #ff0000;">
    -moz-animation-direction</span>:<span style="color: #0000ff;">reverse</span>;<span style="color: #ff0000;">
    animation-direction</span>:<span style="color: #0000ff;">reverse</span>;
}<span style="color: #800000;">
.alternate</span>{<span style="color: #ff0000;">
    -webkit-animation-direction</span>:<span style="color: #0000ff;">alternate</span>;<span style="color: #ff0000;">
    -moz-animation-direction</span>:<span style="color: #0000ff;">alternate</span>;<span style="color: #ff0000;">
    animation-direction</span>:<span style="color: #0000ff;">alternate</span>;
}<span style="color: #800000;">
.alternate-reverse</span>{<span style="color: #ff0000;">
    -webkit-animation-direction</span>:<span style="color: #0000ff;">alternate-reverse</span>;<span style="color: #ff0000;">
    -moz-animation-direction</span>:<span style="color: #0000ff;">alternate-reverse</span>;<span style="color: #ff0000;">
    animation-direction</span>:<span style="color: #0000ff;">alternate-reverse</span>;
}<span style="color: #800000;">
@-webkit-keyframes FormLeftToRight</span>{<span style="color: #ff0000;">
    0%{left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100%</span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;">
}
@-moz-keyframes FormLeftToRight</span>{<span style="color: #ff0000;">
    0%{left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100%</span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;">
}
@keyframes FormLeftToRight</span>{<span style="color: #ff0000;">
    0%{left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100%</span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;">
}</span>

Salin selepas log masuk

 <span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>四种不同的顺序<span style="color: #0000ff;"></span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="box"</span><span style="color: #0000ff;">></span>normal<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="box reverse"</span><span style="color: #0000ff;">></span>reverse<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="box alternate"</span><span style="color: #0000ff;">></span>alternate<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="box alternate-reverse"</span><span style="color: #0000ff;">></span>alternate-reverse<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span></span></span></span>

Salin selepas log masuk

　　效果：

四种不同的顺序

normal

reverse

alternate

alternate-reverse

　　8）动画的状态（animation-play-state）

　　　　设置对象动画的状态

　　　　animation-play-state：running | paused

　　　　running：运动

　　　　paused：暂停

　　例子源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.state</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#000</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;">relative</span>;<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -webkit-animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;<span style="color: #ff0000;"> 
    -moz-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -moz-animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;<span style="color: #ff0000;"> 
    animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    animation-iteration-count</span>:<span style="color: #0000ff;">infinite</span>;
}<span style="color: #800000;">
.state:hover</span>{<span style="color: #ff0000;">
    -webkit-animation-play-state</span>:<span style="color: #0000ff;">paused</span>;<span style="color: #ff0000;">
    -moz-animation-play-state</span>:<span style="color: #0000ff;">paused</span>;<span style="color: #ff0000;">
    animation-play-state</span>:<span style="color: #0000ff;">paused</span>;
}<span style="color: #800000;">
@-webkit-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}</span>

Salin selepas log masuk

<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>鼠标移动到矩形上可以暂停动画<span style="color: #0000ff;"></span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="state"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span>

Salin selepas log masuk

　　效果：

鼠标移动到矩形上可以暂停动画

　　9）动画时间之外的状态（animation-fill-mode）

　　　　设置对象动画时间之外的状态

　　　　animation-fill-mode ： none | forwards | backwards | both

　　　　none：默认值。不设置对象动画之外的状态

　　　　forwards：设置对象状态为动画结束时的状态

　　　　backwards：设置对象状态为动画开始时的状态

　　　　both：设置对象状态为动画结束或开始的状态

　　例子源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.mode</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#000</span>;<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;">relative</span>;<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -webkit-animation-fill-mode</span>:<span style="color: #0000ff;">forwards</span>;<span style="color: #ff0000;">
    -moz-animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    -moz-animation-fill-mode</span>:<span style="color: #0000ff;">forwards</span>;<span style="color: #ff0000;">
    animation-name</span>:<span style="color: #0000ff;">FromLeftToRight</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">3s</span>;<span style="color: #ff0000;">
    animation-fill-mode</span>:<span style="color: #0000ff;">forwards</span>;
}<span style="color: #800000;">
@-webkit-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@-moz-keyframes FromLeftToRight</span>{<span style="color: #ff0000;">
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}
@keyframes FromLeftToRight</span>{<span style="color: #ff0000;"> 
    0% {left</span>:<span style="color: #0000ff;">0</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">left</span>:<span style="color: #0000ff;">500px</span>;}<span style="color: #800000;"> 
}</span>

Salin selepas log masuk

<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>请按F5刷新动画（动画结束后停在结束位置）<span style="color: #0000ff;"></span><span style="color: #800000;">p</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="mode"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span>

Salin selepas log masuk

　　效果：

请按F5刷新动画（动画结束后停在结束位置）

　　10）动画复合属性（animation）

　　　　通过 animation ，我们能够创建自定义动画，这可以在许多网页中取代动画图片gif、Flash 动画以及 JavaScript。

　　　　animation： || || || || || || || [ ,*]

　　利用学过的动画样式，制作一个下滑菜单栏

　　源代码：

<span style="color: #008000;">/*</span><span style="color: #008000;"> CSS代码 </span><span style="color: #008000;">*/</span><span style="color: #800000;">
.dropmenu</span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;">100px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;">30px</span>;<span style="color: #ff0000;">
    line-height</span>:<span style="color: #0000ff;">30px</span>;<span style="color: #ff0000;">
    text-align</span>:<span style="color: #0000ff;">center</span>;<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">green</span>;<span style="color: #ff0000;">
    border-radius</span>:<span style="color: #0000ff;">10px</span>;<span style="color: #ff0000;">
    overflow</span>:<span style="color: #0000ff;">hidden</span>;
}<span style="color: #800000;">
.dropmenu a</span>{<span style="color: #ff0000;">
    font-family</span>:<span style="color: #0000ff;">"微软雅黑"</span>;<span style="color: #ff0000;">
    font-size</span>:<span style="color: #0000ff;">18px</span>;<span style="color: #ff0000;">
    color</span>:<span style="color: #0000ff;">#fff</span>;<span style="color: #ff0000;">
    text-decoration</span>:<span style="color: #0000ff;">none</span>;
}<span style="color: #800000;">
.dropmenu ul</span>{<span style="color: #ff0000;">
    list-style-type</span>:<span style="color: #0000ff;">none</span>;<span style="color: #ff0000;">
    padding</span>:<span style="color: #0000ff;">0</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;">0</span>;
}<span style="color: #800000;">
.dropmenu ul li</span>{<span style="color: #ff0000;">
    background</span>:<span style="color: #0000ff;">#808080</span>;
}<span style="color: #800000;">
.dropmenu:hover</span>{<span style="color: #ff0000;">
    -webkit-animation-name</span>:<span style="color: #0000ff;">SlideDown</span>;<span style="color: #ff0000;">
    -moz-animation-name</span>:<span style="color: #0000ff;">SlideDown</span>;<span style="color: #ff0000;">
    animation-name</span>:<span style="color: #0000ff;">SlideDown</span>;<span style="color: #ff0000;">
    -webkit-animation-duration</span>:<span style="color: #0000ff;">1s</span>;<span style="color: #ff0000;">
    -moz-animation-duration</span>:<span style="color: #0000ff;">1s</span>;<span style="color: #ff0000;">
    animation-duration</span>:<span style="color: #0000ff;">1s</span>;<span style="color: #ff0000;">
    -webkit-animation-fill-mode</span>:<span style="color: #0000ff;">forwards</span>;<span style="color: #ff0000;">
    -moz-animation-fill-mode</span>:<span style="color: #0000ff;">forwards</span>;<span style="color: #ff0000;">
    animation-fill-mode</span>:<span style="color: #0000ff;">forwards</span>;
}<span style="color: #800000;">
@-webkit-keyframes SlideDown</span>{<span style="color: #ff0000;">
    0% {height</span>:<span style="color: #0000ff;">30px</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">height</span>:<span style="color: #0000ff;">155px</span>;}<span style="color: #800000;">
}
@-moz-keyframes SlideDown</span>{<span style="color: #ff0000;">
    0% {height</span>:<span style="color: #0000ff;">30px</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">height</span>:<span style="color: #0000ff;">155px</span>;}<span style="color: #800000;">
}
@keyframes SlideDown</span>{<span style="color: #ff0000;">
    0% {height</span>:<span style="color: #0000ff;">30px</span>;}<span style="color: #800000;">
    100% </span>{<span style="color: #ff0000;">height</span>:<span style="color: #0000ff;">155px</span>;}<span style="color: #800000;">
}</span>

Salin selepas log masuk

<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="dropmenu"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="###"</span><span style="color: #0000ff;">></span>菜单栏<span style="color: #0000ff;"></span><span style="color: #800000;">a</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><span style="color: #800000;">li</span><span style="color: #0000ff;">><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="###"</span><span style="color: #0000ff;">></span>AAA<span style="color: #0000ff;"></span><span style="color: #800000;">a</span><span style="color: #0000ff;">></span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><span style="color: #800000;">li</span><span style="color: #0000ff;">><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="###"</span><span style="color: #0000ff;">></span>AAA<span style="color: #0000ff;"></span><span style="color: #800000;">a</span><span style="color: #0000ff;">></span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><span style="color: #800000;">li</span><span style="color: #0000ff;">><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="###"</span><span style="color: #0000ff;">></span>AAA<span style="color: #0000ff;"></span><span style="color: #800000;">a</span><span style="color: #0000ff;">></span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span>
            <span style="color: #0000ff;"><span style="color: #800000;">li</span><span style="color: #0000ff;">><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="###"</span><span style="color: #0000ff;">></span>AAA<span style="color: #0000ff;"></span><span style="color: #800000;">a</span><span style="color: #0000ff;">></span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"></span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span></span>

Salin selepas log masuk

　　效果：

菜单栏