动画animation的三个应用(漂浮的白云、旋转的星球、正方体合成)-小火柴的蓝色理想

.box{
    position: relative;
    height: 300px;
    width: 500px;
}    
.in1,.in2{
    position: absolute;
    height: 100%;
    width: 100%;
    background-size:cover;
    animation: move 100s infinite linear alternate;
}
@keyframes move{
    100%{background-position: 500% 0;}
}
.in1{
    background-image: url('http://sandbox.runjs.cn/uploads/rs/26/ddzmgynp/cloud.png');   
}
.in2{
    background-image: url('http://sandbox.runjs.cn/uploads/rs/26/ddzmgynp/cloud1.png');
    animation-duration: 10s;
}

<div class="box">
    <div class="in1"></div>
    <div class="in2"></div>
</div>

.box{
    transform: scale(0.5);
    position: relative;
    padding: 1px;
    height: 300px;
    width: 300px;
}    
.sunline{
    position:relative;
    height: 400px;
    width: 400px;
    border: 2px solid black;
    border-radius: 50%;
    margin: 50px 0 0 50px;
    display: flex;
    animation: rotate 10s infinite linear;
}
.sun{
    height: 100px;
    width: 100px;
    margin: auto;
    background-color: red;
    border-radius: 50%;
    box-shadow: 5px 5px 10px red,-5px -5px 10px red,5px -5px 10px red,-5px 5px 10px red;
}
.earthline{
    position: absolute;
    right: 0;
    top: 50%;
    height: 200px;
    width: 200px;
    margin: -100px -100px 0 0;
    border: 1px solid black;
    border-radius: 50%;
    display: flex;
    animation: rotate 2s infinite linear;
}
.earth{
    margin: auto;
    height: 50px;
    width: 50px;
    background-color: blue;
    border-radius: 50%;
}
.moon{
    position: absolute;
    left: 0;
    top: 50%;
    height: 20px;
    width: 20px;
    margin: -10px 0 0 -10px;
    background-color: black;
    border-radius: 50%;
}
@keyframes rotate{
    100%{transform:rotate(360deg);}
}

<div class="box">
    <div class="sunline">
        <div class="sun"></div>
        <div class="earthline">
            <div class="earth"></div>
            <div class="moon"></div>
        </div>
    </div>
</div>

ul{
    margin: 0;
    padding: 0;
    list-style: none;
}
.box{
    height: 100px;
    width: 100px;
    perspective: 500px;
    margin: 50px 0 0 50px;
}    
.list{
    position: relative;
    height: 100px;
    width: 100px;
    background-color: blue;
    transform-style: preserve-3d;
    transform-origin: 0 0 0;
    animation: rotate 1s  10s 3 both linear;
}
.in{
    position: absolute;
    height: 100px;
    width: 100px;
}
.list .in:nth-child(6){
    background-color: pink;
    transform-origin: top;
    animation: in6 2s both;
}
.list .in:nth-child(5){
    background-color: lightgreen;
    transform-origin: right;
    animation: in5 2s 2s both;
}
.list .in:nth-child(4){
    background-color: lightblue;
    transform-origin: bottom;
    animation: in4 2s 4s both;
}
.list .in:nth-child(3){
    background-color: lightcoral;
    transform-origin: left;
    animation: in3 2s 6s both;
}
.list .in:nth-child(2){
    background-color: lightcyan;
    animation: in2 2s 8s both;
}
.list .in:nth-child(1){background-color: lightsalmon;}
.box:hover .list{animation-play-state: paused;}
.box:hover .in{animation-play-state: paused;}
@keyframes in6{100%{transform: rotateX(90deg);}}
@keyframes in5{100%{transform: rotateY(90deg);}}
@keyframes in4{100%{transform: rotateX(-90deg);}}
@keyframes in3{100%{transform: rotateY(-90deg);}}
@keyframes in2{100%{transform: translateZ(100px);}}
@keyframes rotate{100%{transform: rotate3d(1,1,1,360deg);}}

<div class="box">
    <ul class="list" id="list">
        <li class="in"></li>
        <li class="in"></li>
        <li class="in"></li>
        <li class="in"></li>
        <li class="in"></li>
        <li class="in"></li>
    </ul>
</div>

list.addEventListener('animationend',function(e){
    e = e || event;
    var target = e.target || e.srcElement;
    if(target.nodeName == 'UL'){
        list.style.animationName = 'none';
        var children = list.getElementsByTagName('li');
        for(var i = 0; i < children.length;i++){
            children[i].style.animationName = 'none';
        }
        setTimeout(function(){
            list.style.animationName = 'rotate';
            var children = list.getElementsByTagName('li');
            for(var i = 0; i < children.length;i++){
                children[i].style.animationName = 'in' + (i+1);
            }        
        },100);        
    }
},false);