<!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{
color:darkorchid
}
.main {
color: blue
}
span {
color: green
}
</style>
</head>
<body>
<!-- 继承的特指度没有 lala-->
<div style="color:red !important" class="" main"">
lala
<span>123</span>
</div>
</body>
</html>