效果一：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.loading{
80px;
height: 40px;
margin: 0 auto;
margin-top:100px;
}
.loading span{
display: inline-block;
8px;
height: 100%;
border-radius: 4px;
background: lightgreen;
-webkit-animation: load 1s ease infinite;
}
@-webkit-keyframes load{
0%,100%{
height: 40px;
background: lightgreen;
}
50%{
height: 70px;
margin: -15px 0;
background: lightblue;
}
}
.loading span:nth-child(2){
-webkit-animation-delay:0.2s;
}
.loading span:nth-child(3){
-webkit-animation-delay:0.4s;
}
.loading span:nth-child(4){
-webkit-animation-delay:0.6s;
}
.loading span:nth-child(5){
-webkit-animation-delay:0.8s;
}
</style>
</head>
<body>
<div class="loading">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
</body>
</html>
效果二：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.loadEffect{
100px;
height: 100px;
position: relative;
margin: 0 auto;
margin-top:100px;
}
.loadEffect span{
display: inline-block;
20px;
height: 20px;
border-radius: 50%;
background: lightgreen;
position: absolute;
-webkit-animation: load 1.04s ease infinite;
}
@-webkit-keyframes load{
0%{
-webkit-transform: scale(1.2);
opacity: 1;
}
100%{
-webkit-transform: scale(.3);
opacity: 0.5;
}
}
.loadEffect span:nth-child(1){
left: 0;
top: 50%;
margin-top:-10px;
-webkit-animation-delay:0.13s;
}
.loadEffect span:nth-child(2){
left: 14px;
top: 14px;
-webkit-animation-delay:0.26s;
}
.loadEffect span:nth-child(3){
left: 50%;
top: 0;
margin-left: -10px;
-webkit-animation-delay:0.39s;
}
.loadEffect span:nth-child(4){
top: 14px;
right:14px;
-webkit-animation-delay:0.52s;
}
.loadEffect span:nth-child(5){
right: 0;
top: 50%;
margin-top:-10px;
-webkit-animation-delay:0.65s;
}
.loadEffect span:nth-child(6){
right: 14px;
bottom:14px;
-webkit-animation-delay:0.78s;
}
.loadEffect span:nth-child(7){
bottom: 0;
left: 50%;
margin-left: -10px;
-webkit-animation-delay:0.91s;
}
.loadEffect span:nth-child(8){
bottom: 14px;
left: 14px;
-webkit-animation-delay:1.04s;
}
</style>
</head>
<body>
<div class="loadEffect">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
</body>
</html>