Rookie tutorial (runoob.com)
Button Animation - ripple effect
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
.button {
position: relative;
background-color: #4CAF50;
border: none;
font-size: 28px;
color: #FFFFFF;
padding: 20px;
width: 200px;
text-align: center;
-webkit-transition-duration: 0.4s; /* Safari */
transition-duration: 0.4s;
text-decoration: none;
overflow: hidden;
cursor: pointer;
}
.button:after {
content: "";
background: #90EE90;
display: block;
position: absolute;
padding-top: 300%;
padding-left: 350%;
margin-left: -20px!important;
margin-top: -120%;
opacity: 0;
transition: all 0.8s
}
.button:active:after {
padding: 0;
margin: 0;
opacity: 1;
transition: 0s
}
</style>
</head>
<body>
<h2>按钮动画 - 波纹效果</h2>
<button class="button">Click Me</button>
</body>
</html>