代码如下：
<!DOCTYPE html>
<html > <head>
<meta charset="UTF-8">
<title>CodePen - word animation | word filter</title>
<style>
* {
box-sizing: border-box;
} html, body {
height: 100%;
width: 100%;
background-color: black;
padding:0;
margin:0;
} .container {
width: 100%;
height: 100%;
position: relative;
filter: contrast(20);
background-color: black;
overflow: hidden;
} h1 {
font-family:consolas, 黑体;
color: white;
font-size: 4rem;
text-transform: uppercase;
line-height: 1;
animation: letterspacing 5s infinite alternate ease-in-out;
display: block;
position: absolute;
left: 50%;
top: 40%;
transform: translate3d(-50%, -50%, 0);
letter-spacing: -2rem;
white-space:nowrap;
padding:0;
margin:0;
} @keyframes letterspacing {
0% {
letter-spacing: -2rem;
filter: blur(1rem);
color:red;
}
50% {
filter: blur(0.5rem);
}
80% {
letter-spacing: .5rem;
filter: blur(0.1rem);
color: #fff;
}
100% {
letter-spacing: 0.5rem;
filter: blur(0rem);
color: #fff;
}
}
</style> </head> <body> <div class="container">
<h1>ABCDE 中文测试</h1>
</div> </body>
</html>