css3动画属性有:“@keyframes”、animation、animation-name、animation-duration、animation-delay、animation-direction等等。
本教程操作环境:windows7系统、CSS3&&HTML5版、Dell G3电脑。
css3动画属性:
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@keyframes 规定动画。
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animation 所有动画属性的简写属性,除了 animation-play-state 属性。
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animation-name 规定 @keyframes 动画的名称。
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animation-duration 规定动画完成一个周期所花费的秒或毫秒。默认是 0。
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animation-timing-function 规定动画的速度曲线。默认是 "ease"。
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animation-delay 规定动画何时开始。默认是 0。
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animation-iteration-count 规定动画被播放的次数。默认是 1。
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animation-direction 规定动画是否在下一周期逆向地播放。默认是 "normal"。
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animation-play-state 规定动画是否正在运行或暂停。默认是 "running"。
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animation-fill-mode 规定对象动画时间之外的状态。
示例:使用css3动画属性制作简单动画
body { background-color: #fff; color: #555; font-size: 1.1em; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; } .container { margin: 50px auto; min-width: 320px; max-width: 500px; } .element { margin: 0 auto; width: 100px; height: 100px; background-color: #0099cc; border-radius: 50%; position: relative; top: 0; -webkit-animation: bounce 2s infinite; animation: bounce 2s infinite; } @-webkit-keyframes bounce { from { top: 100px; -webkit-animation-timing-function: ease-out; animation-timing-function: ease-out; } 25% { top: 50px; -webkit-animation-timing-function: ease-in; animation-timing-function: ease-in; } 50% { top: 150px; -webkit-animation-timing-function: ease-out; animation-timing-function: ease-out; } 75% { top: 75px; -webkit-animation-timing-function: ease-in; animation-timing-function: ease-in; } to { top: 100px; } } @keyframes bounce { from { top: 100px; -webkit-animation-timing-function: ease-out; animation-timing-function: ease-out; } 25% { top: 50px; -webkit-animation-timing-function: ease-in; animation-timing-function: ease-in; } 50% { top: 150px; -webkit-animation-timing-function: ease-out; animation-timing-function: ease-out; } 75% { top: 75px; -webkit-animation-timing-function: ease-in; animation-timing-function: ease-in; } to { top: 100px; } }
3、运行效果
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