【CSS3】CSSでウィンドウズモバイルのローディングアニメーションを再現する。

ローディングアニメーション第2弾。
マークアップは下記の通り。

■HTML

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<div class="stage-2">
<span>Loading...</span>
<span class="l-1"></span>
<span class="l-2"></span>
<span class="l-3"></span>
<span class="l-4"></span>
<span class="l-5"></span>
<span class="l-6"></span>
</div>

■CSS

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.stage-2 {
  font-family: meiryo;
  background: #fff;
  width: 200px;
  height: 100px;
  margin: 0 auto;
  padding: 100px 0 0 100px;
}
span {
    display: block;
    margin: 0 auto;
}
 
span[class*="l-"] {
    height: 4px; width: 4px;
    background: #000;
    display: inline-block;
    margin: 12px 2px;
     
    border-radius: 100%;
    -webkit-border-radius: 100%;
    -moz-border-radius: 100%;
     
    -webkit-animation: loader 4s infinite;
    -webkit-animation-timing-function: cubic-bezier(0.030, 0.615, 0.995, 0.415);
    -webkit-animation-fill-mode: both;
    -moz-animation: loader 4s infinite;
    -moz-animation-timing-function: cubic-bezier(0.030, 0.615, 0.995, 0.415);
    -moz-animation-fill-mode: both;
    -ms-animation: loader 4s infinite;
    -ms-animation-timing-function: cubic-bezier(0.030, 0.615, 0.995, 0.415);
    -ms-animation-fill-mode: both;
    animation: loader 4s infinite;
    animation-timing-function: cubic-bezier(0.030, 0.615, 0.995, 0.415);
    animation-fill-mode: both;
}
 
span.l-1 {-webkit-animation-delay: 1s;animation-delay: 1s;-ms-animation-delay: 1s;-moz-animation-delay: 1s;}
span.l-2 {-webkit-animation-delay: 0.8s;animation-delay: 0.8s;-ms-animation-delay: 0.8s;-moz-animation-delay: 0.8s;}
span.l-3 {-webkit-animation-delay: 0.6s;animation-delay: 0.6s;-ms-animation-delay: 0.6s;-moz-animation-delay: 0.6s;}
span.l-4 {-webkit-animation-delay: 0.4s;animation-delay: 0.4s;-ms-animation-delay: 0.4s;-moz-animation-delay: 0.4s;}
span.l-5 {-webkit-animation-delay: 0.2s;animation-delay: 0.2s;-ms-animation-delay: 0.2s;-moz-animation-delay: 0.2s;}
span.l-6 {-webkit-animation-delay: 0;animation-delay: 0;-ms-animation-delay: 0;-moz-animation-delay: 0;}
 
@-webkit-keyframes loader {
    0% {-webkit-transform: translateX(-30px); opacity: 0;}
    25% {opacity: 1;}
    50% {-webkit-transform: translateX(30px); opacity: 0;}
    100% {opacity: 0;}
}
 
@-moz-keyframes loader {
    0% {-moz-transform: translateX(-30px); opacity: 0;}
    25% {opacity: 1;}
    50% {-moz-transform: translateX(30px); opacity: 0;}
    100% {opacity: 0;}
}
 
@-keyframes loader {
    0% {-transform: translateX(-30px); opacity: 0;}
    25% {opacity: 1;}
    50% {-transform: translateX(30px); opacity: 0;}
    100% {opacity: 0;}
}
 
@-ms-keyframes loader {
    0% {-ms-transform: translateX(-30px); opacity: 0;}
    25% {opacity: 1;}
    50% {-ms-transform: translateX(30px); opacity: 0;}
    100% {opacity: 0;}
}