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<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>纯CSS3方块翻转效果的Loading加载动画</title>

<style>
    body,html{width:100%;}
body{margin:0;background:#FA3663}
.loader{height:600px;width:100%}
.loader .l_main{position:absolute;top:50%;left:50%;width:172px;height:128px;margin:0;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%)}
@media (max-width:550px){.loader{-webkit-transform:scale(0.75);transform:scale(0.75)}}
@media (max-width:440px){.loader{-webkit-transform:scale(0.5);transform:scale(0.5)}}
.l_square{position:relative}
.l_square:nth-child(1){margin-left:0px}
.l_square:nth-child(2){margin-left:44px}
.l_square:nth-child(3){margin-left:88px}
.l_square:nth-child(4){margin-left:132px}
.l_square span{position:absolute;top:0px;left:20px;height:36px;width:36px;border-radius:2px;background-color:#FFFFFF}
.l_square span:nth-child(1){top:0px}
.l_square span:nth-child(2){top:44px}
.l_square span:nth-child(3){top:88px}
.l_square:nth-child(1) span{-webkit-animation:animsquare1 2s infinite ease-in;animation:animsquare1 2s infinite ease-in}
.l_square:nth-child(2) span{-webkit-animation:animsquare2 2s infinite ease-in;animation:animsquare2 2s infinite ease-in}
.l_square:nth-child(3) span{-webkit-animation:animsquare3 2s infinite ease-in;animation:animsquare3 2s infinite ease-in}
.l_square:nth-child(4) span{-webkit-animation:animsquare4 2s infinite ease-in;animation:animsquare4 2s infinite ease-in}
.l_square span:nth-child(1){-webkit-animation-delay:0.00s;animation-delay:0.00s}
.l_square span:nth-child(2){-webkit-animation-delay:0.15s;animation-delay:0.15s}
.l_square span:nth-child(3){-webkit-animation-delay:0.30s;animation-delay:0.30s}
@-webkit-keyframes animsquare1{0%,5%,95%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}30%,70%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
@keyframes animsquare1{0%,5%,95%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}30%,70%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
@-webkit-keyframes animsquare2{0%,10%,90%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}35%,65%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
@keyframes animsquare2{0%,10%,90%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}35%,65%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
@-webkit-keyframes animsquare3{0%,15%,85%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}40%,60%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
@keyframes animsquare3{0%,15%,85%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}40%,60%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
@-webkit-keyframes animsquare4{0%,20%,80%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}45%,55%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
@keyframes animsquare4{0%,20%,80%,100%{-webkit-transform:translate(0px,0px) rotate(0deg);transform:translate(0px,0px) rotate(0deg)}45%,55%{-webkit-transform:translate(-40px,0px) rotate(-90deg);transform:translate(-40px,0px) rotate(-90deg)}}
</style>

</head>
<body>

<div class="loader">
    <div class="l_main">
        <div class="l_square"><span></span><span></span><span></span></div>
        <div class="l_square"><span></span><span></span><span></span></div>
        <div class="l_square"><span></span><span></span><span></span></div>
        <div class="l_square"><span></span><span></span><span></span></div>
    </div>
</div>



</body>
</html>
纯CSS3方块翻转效果的Loading加载动画