
CSS
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="utf-8" />
<title>hoverで回転(修正済み)</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<style type="text/css">
.rotate_test {
transform: rotateX(0deg); /* 軸を基準点に回転する */
height:20px;
width:20px;
}
.rotate_test:hover {
transform: rotateX(180deg); /* 軸を基準点に回転する */
}
.rotate_test , .rotate_test:hover {
transition: transform 0.5s linear;
transform-origin:10 0;
display:inline-block;
}
</style>
</head>
<body>
<div class="rotate_test">
<svg width="20" height="20" xmlns="http://www.w3.org/2000/svg">
<rect x="0" y="0" width="20" height="20" fill="aqua"/>
<line x1="0" y1="0" x2="10" y2="20" style="stroke:rgb(0,0,0);stroke-width:1"></line>
<line x1="10" y1="20" x2="20" y2="0" style="stroke:rgb(0,0,0);stroke-width:1"></line>
</svg>
</div>
</body>
</html>