CSS3动画（二）：波浪效果

body{background:#ffe894;}
.loading_bg{width:113px; height:111px;background:url(loading_bg.png) no-repeat left top;margin:30px auto;}
.loading{width:113px; height:111px;position:relative; -webkit-mask-image:url(loading.png);}
.show{
    width:120px; height:187px; position:absolute; left:0; top:40px;
    animation:sploosh 3s ease-in-out both infinite; 
    -webkit-animation:sploosh 3s ease-in-out both infinite;
    background-image: url(bolang.png);
}
.show_01{-webkit-animation-delay: -0.8s;  animation-delay: -0.8s; opacity:0.2;}
.show_02{-webkit-animation-delay: -1.6s;  animation-delay: -1.6s; opacity:0.4;}
.show_03{-webkit-animation-delay: -2.4s;  animation-delay: -2.4s; opacity:0.6;}
.show_04{-webkit-animation-delay: -3.2s;  animation-delay: -3.2s; opacity:0.8;}

@-webkit-keyframes sploosh{
  0% {background-position: 0 bottom;}
  100% {background-position: 200px bottom;}
}
@keyframes sploosh{
  0% {background-position: 0 bottom;}
  100% {background-position: 200px bottom;}
}

<div class="loading_bg">
    <div class="loading">
        <div class="show_01 show"></div>
        <div class="show_02 show"></div>
        <div class="show_03 show"></div>
        <div class="show_04 show"></div>
    </div>
</div>