css3使用animation属性实现炫酷效果(推荐)

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animation-name 动画名称，可以有多个值，用逗号隔开，表示绑定了多个动画

animation-name属性为动画指定一个名称

animation-name兼容主流的浏览器，不过还是需要加前缀去兼容

animation-name有两个属性值，分别是keyframename和none

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
    body{
        margin:0 auto;    
        background:#abcdef;    
    }
    div{    
        width:800px;
        height:800px;
        margin:0 auto;    
    }
    .container{
        position: relative;
    }
    .inner, .middle, .outer, .pic{
        position: absolute;
        top:0;
        right:0;
        bottom:0;
        left:0;
        margin:auto;        
    }
    .inner{
        background:url(source/circle_inner.jpg) center no-repeat;
        animation-name:circle_inner;
    }
    .middle{
        background:url(source/circle_middle.jpg) center no-repeat;
        animation-name:circle_middle;
    }
    .outer{
        background:url(source/circle_outer.jpg) center no-repeat;
        animation-name:circle_outer;
    }
    .pic{
        background:url(source/pic.jpg) center no-repeat;
    }
</style>
</head>
<body>
    <div class="container">
        <div class="inner"></div>
        <div class="middle"></div>
        <div class="outer"></div>
        <div class="pic"></div>
    </div>
</body>
</html>

animation-duration 动画持续时间默认是0

animation-timing-function 动画时间函数

animation-delay 动画延迟时间

animation-delay 属性定义动画什么时候开始，单位可以是秒（s）或毫秒（ms），允许负值，-2s使动画马上开始，但会跳过2s进入动画

animation-iteration-count 动画循环次数

animation-iteration-count: number | infinite 默认为1

animation-direction: normal | reverse | alternate | alternate-reverse 正常；反向；正反交替；反正交替

alternate 和 alternate-reverse ，如果animation-itreation-count 不是设置成 infinite ，则只会执行一次就停止

animation-fill-mode 动画延迟未执行时，或者动画执行完毕后的停留状态（动画不能设置为循环，否则无法停止）

animation-fill-mode: none | forwards | backwards | both 无结束状态开始状态看情况

animation-play-state: running | paused 动画运行状态：运行 | 暂停

animation 简写

animation: name duration timing-function delay iteration-count direction fill-mode play-state

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
    body{
        margin:0 auto;    
        background:#abcdef;    
    }
    div{    
        width:800px;
        height:800px;
        margin:0 auto;    
    }
    .container{
        position: relative;
        -webkit-transform-style:preserve-3d;
           -moz-transform-style:preserve-3d;
            -ms-transform-style:preserve-3d;
             -o-transform-style:preserve-3d;
                transform-style:preserve-3d;
    }
    .inner, .middle, .outer, .pic{
        position: absolute;
        top:0;
        right:0;
        bottom:0;
        left:0;
        margin:auto;        
    }
    .container:hover div{
        -webkit-animation-play-state:paused;
           -moz-animation-play-state:paused;
            -ms-animation-play-state:paused;
             -o-animation-play-state:paused;
                animation-play-state:paused;
    }
    .inner{
        background:url(source/circle_inner.jpg) center no-repeat;    
        /*循环*/
        -webkit-animation:circle_inner 10s ease-in-out 1s infinite alternate running;
           -moz-animation:circle_inner 10s ease-in-out 1s infinite alternate running;
            -ms-animation:circle_inner 10s ease-in-out 1s infinite alternate running;
             -o-animation:circle_inner 10s ease-in-out 1s infinite alternate running;
                animation:circle_inner 10s ease-in-out 1s infinite alternate running;    
        /*不循环，填充效果*/
        /*-webkit-animation:circle_inner 10s ease-in-out 1s forwards running;
           -moz-animation:circle_inner 10s ease-in-out 1s forwards running;
            -ms-animation:circle_inner 10s ease-in-out 1s forwards running;
             -o-animation:circle_inner 10s ease-in-out 1s forwards running;
                animation:circle_inner 10s ease-in-out 1s forwards running;*/
    }
    .middle{
        background:url(source/circle_middle.jpg) center no-repeat;
        -webkit-animation:circle_middle 10s ease-in-out 1s infinite alternate running;
           -moz-animation:circle_middle 10s ease-in-out 1s infinite alternate running;
            -ms-animation:circle_middle 10s ease-in-out 1s infinite alternate running;
             -o-animation:circle_middle 10s ease-in-out 1s infinite alternate running;
                animation:circle_middle 10s ease-in-out 1s infinite alternate running;    
    }
    .outer{
        background:url(source/circle_outer.jpg) center no-repeat;
        -webkit-animation:circle_outer 10s ease-in-out 1s infinite alternate running;
           -moz-animation:circle_outer 10s ease-in-out 1s infinite alternate running;
            -ms-animation:circle_outer 10s ease-in-out 1s infinite alternate running;
             -o-animation:circle_outer 10s ease-in-out 1s infinite alternate running;
                animation:circle_outer 10s ease-in-out 1s infinite alternate running;    
    }
    .pic{
        background:url(source/pic.jpg) center no-repeat;
    }
    @keyframes circle_inner{
        0%{ transform:rotateX(0deg); }
        50%{ transform:rotateX(90deg); }
        100%{ transform:rotateX(360deg); }
    }
    @keyframes circle_middle{
        0%{ transform:rotateY(0deg); }
        50%{ transform:rotateY(90deg); }
        100%{ transform:rotateY(360deg); }
    }
    @keyframes circle_outer{
        0%{ transform:rotateZ(0deg); }
        50%{ transform:rotateZ(90deg); }
        100%{ transform:rotateZ(360deg); }
    }
</style>
</head>
<body>
    <div class="container">
        <div class="inner"></div>
        <div class="middle"></div>
        <div class="outer"></div>
        <div class="pic"></div>
    </div>
</body>
</html>

动画性能优化：

用position-fixed代替background-attachment

带图片的元素放在伪元素中

will-change

兼容性IE13+ 感觉可以放弃了……

向下提示箭头效果

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
    body{
        margin:0 auto;    
        background:#abcdef;    
    }
    div{    
        width:30px;
        height:30px;
        position: fixed;
        left:0;
        right:0;
        bottom:100px;
        margin:0 auto;    
        cursor:pointer;
        -webkit-transform:rotate(90deg);
           -moz-transform:rotate(90deg);
            -ms-transform:rotate(90deg);
             -o-transform:rotate(90deg);
                transform:rotate(90deg);
        -webkit-animation:upDown 2s ease-in-out infinite;
          -moz-animation:upDown 2s ease-in-out infinite;
           -ms-animation:upDown 2s ease-in-out infinite;
            -o-animation:upDown 2s ease-in-out infinite;
               animation:upDown 2s ease-in-out infinite;
    }
    @-webkit-keyframes upDown{
        0%{ bottom:100px; }
        50%{ bottom:80px; }
        100%{ bottom:100px; }
    }
    @-moz-keyframes upDown{
        0%{ bottom:100px; }
        50%{ bottom:80px; }
        100%{ bottom:100px; }
    }
    @-ms-keyframes upDown{
        0%{ bottom:100px; }
        50%{ bottom:80px; }
        100%{ bottom:100px; }
    }
    @-o-keyframes upDown{
        0%{ bottom:100px; }
        50%{ bottom:80px; }
        100%{ bottom:100px; }
    }
    @keyframes upDown{
        0%{ bottom:100px; }
        50%{ bottom:80px; }
        100%{ bottom:100px; }
    }
</style>
</head>
<body>
    <div>></div>
</body>
</html>