why use css animations code example
Example 1: animation css
<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 100px;
height: 100px;
background-color: red;
position: relative;
animation: myfirst 5s linear 2s infinite alternate;
}
@keyframes myfirst {
0% {background-color:red; left:0px; top:0px;}
25% {background-color:yellow; left:200px; top:0px;}
50% {background-color:blue; left:200px; top:200px;}
75% {background-color:green; left:0px; top:200px;}
100% {background-color:red; left:0px; top:0px;}
}
</style>
</head>
<body>
<p><b>Note:</b> This example does not work in Internet Explorer 9 and earlier versions.</p>
<div><p>you can add text in this box or anithing else like a pictrue</p></div>
</body>
</html>
Example 2: animations css
window.addEventListener('scroll', () => {
document.body.style.setProperty('--scroll',window.pageYOffset / (document.body.offsetHeight - window.innerHeight));
}, false);