Zusammenfassung der CSS-Kenntnisse (9)
Gemeinsame CSS-Stile
10. Benutzerdefinierte Animation
1) Keyframes(Keyframes)
wird als Keyframe bezeichnet und ähnelt dem Keyframe in Flash.
In CSS3 beginnt es hauptsächlich mit „@keyframes“, gefolgt vom Namen der Animation und einem Paar geschweifter Klammern „{...}“. In den Klammern stehen einige Stilregeln für verschiedene Zeiträume.
Syntax: @keyframes Animationsname {keyframes-selector {css-styles;}}
Animationsname: Definieren Sie den Namen der Animation.
keyframes-selector: Gibt den Zeitpunkt an, zu dem die Änderung prozentual erfolgt, oder durch die Schlüsselwörter „from“ und „to“, die 0 % und 100 % entsprechen. Es wird empfohlen, den Prozentsatz-Selektor zu definieren.
css-styles: Mit der @keyframes-Regel können Sie Animationen erstellen, die schrittweise einen Satz von CSS-Stilen in einen anderen ändern, und diesen Satz von CSS-Stilen mehrmals ändern.
Kompatibilität: Derzeit unterstützen Browser keine @keyframes-Regeln, daher müssen Sie das Präfix „-moz-“, „-o-“, „-webkit-“ hinzufügen.
Beispiel:
<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>
2) Animationsname(Animationsname)
Der auf das Element angewendete Animationsname muss in Verbindung mit der Regel @keyframes verwendet werden, da der Animationsname durch @keyframes definiert wird.
animationsname: keiner |
Beispiel:
<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>
3) Animationszeit(Animationsdauer)
Geben Sie die Dauer der Objektanimation an
Animationsdauer:
Beispiel-Quellcode:
<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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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>
Wirkung:
Bitte drücken Sie F5, um die Animation zu aktualisieren (das Rechteck bewegt sich in 3 Sekunden um 500 Pixel nach rechts)
4)动画的过渡速度(animation-timing-function)
animation-timing-function : ease | linear | ease-in | ease-out | ease-in-out | cubic-bezier(n,n,n,n)
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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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><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>
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)
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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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>
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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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>
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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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><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><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><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>
效果:
四种不同的顺序
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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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>
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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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>
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>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> HTML代码 </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><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><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><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">><</span><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;">li</span><span style="color: #0000ff;">><</span><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;">li</span><span style="color: #0000ff;">><</span><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;">li</span><span style="color: #0000ff;">><</span><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>
效果:

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