要使用CSS在word-spacing属性上实现动画，您可以尝试运行以下代码-
<!DOCTYPE html>
<html>
<head>
<style>
div {
border: 2px solid blue;
background: orange;
animation: myanim 3s infinite;
}
@keyframes myanim {
50% {
word-spacing: 30px;
}
}
</style>
</head>
<body>
<h1>CSS word-spacing property</h1>
<div>
This is demo text! This is demo text! This is demo text! This is demo text!
This is demo text! This is demo text! This is demo text! This is demo text!
This is demo text! This is demo text! This is demo text! This is demo text!
This is demo text! This is demo text! This is demo text! This is demo text!
This is demo text! This is demo text! This is demo text! This is demo text!
</div>
</body>
</html>