<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>截图</title>
<style>
</style>
</head>
<style>
div {
width: 300px;
height: 300px;
margin: 0 auto;
}
.parent {
position: relative;
background: rgb(228, 70, 18);
overflow: hidden;
}
.son {
background: #121;
transform-origin: right bottom;
transform: rotate(90deg);
transition: all 5s;
transition: transform 5s;
}
.parent:hover .son {
transition: all 5s;
transition: transform 5s;
transform-origin: right bottom;
transform: rotate(0deg);
}
</style>
<body>
<div class="parent">
<div class="son"></div>
</div>
</body>
</html>