代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
div {
position: absolute;
top: 0;
left: 0;
width: 100px;
height: 100px;
background-color: orange;
border-radius: 50%;
animation: w_move 2.5s linear infinite alternate,
h_move 3.2s linear infinite alternate;
}
@keyframes w_move {
to {
left: calc(100vw - 100px);
}
}
@keyframes h_move {
to {
top: calc(100vh - 100px);
}
}
</style>
</head>
<body>
<div></div>
</body>
</html>
