<!DOCTYPE html>
<html lang="en">
<head>
<style>
span:hover::after {
content: attr(data-tooltip);
}
</style>
<meta charset="UTF-8">
</head>
<body>
<div>
<span data-tooltip="<div>1~~~</div>">Hover Me!!!</span>
</div>
</body>
</html>
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…