核心提示:css动画主要依赖两个属性:animation和keyframes。animation用于指定动画的总体属性,特别是指定名字供keyframes使用。animation: name duration ...
css动画主要依赖两个属性:animation和keyframes。
animation用于指定动画的总体属性,特别是指定名字供keyframes使用。
animation: name duration timing-function delay iteration-count direction; animation-timing-function:linear|ease|ease-in|ease-out|ease-in-out|cubic-bezier(n,n,n,n) animation-iteration-count: n|infinite; /*播放次数*/ animation-direction: normal|alternate; /*是否轮流反向播放动画*/
@keyframes 规则用于创建动画。在 @keyframes 中规定某项 CSS 样式,就能创建由当前样式逐渐改为新样式的动画效果。
@keyframes myfirst { 0% {background: red;} 25% {background: yellow;} 50% {background: blue;} 100% {background: green;} }
实例
p { width:100px; height:100px; background:red; position:relative; 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; }