<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<style>
#loader .square:nth-child(5n+1) {
background: #0F9;
animation-delay: 0s;
}
#loader .square:nth-child(5n+2) {
background: #0CF;
animation-delay: 0.1s;
}
#loader .square:nth-child(5n+3) {
background: #93F;
animation-delay: 0.2s;
}
#loader .square:nth-child(5n+4) {
background: #F66;
animation-delay: 0.3s;
}
#loader .square:nth-child(5n+5) {
background: #FFF35C;
animation-delay: 0.4s;
}
#loader {
width: 500px;
position: absolute;
text-align: center;
left: calc(50% - 250px);
top: calc(50% - 10px);
}
#loader .square {
display: inline-block;
height: 10px;
width: 10px;
margin: 10px;
position: relative;
box-shadow: 0 0 20px rgba(0, 0, 0, .3);
animation: wave 1s cubic-bezier(.455,.03,.515,.955) infinite;
}
@keyframes wave {
0% {
transform: translateY(0);
}
50% {
transform: translateY(-20px);
}
100% {
transform: translateY(0);
}
}
</style>
</head>
<body>
<div id="loader">
<div class="square"></div>
<div class="square"></div>
<div class="square"></div>
<div class="square"></div>
<div class="square"></div>
<div>加载中。。。</div>
</div>
</body>
</html>