现场演示：我的 HTML 文档

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>CSS Set Maximum Height of an Element</title>
<style>   
    div {
        height: 200px;
        max-height: 100px;
        background: #bbb3ff;
    }
    p {
        max-height: 100px;
        background: #eee8aa;
    }       
</style>
</head>
<body>  
    <div>The maximum height of this div element is set to 100px, so it can't be taller than that.</div>
    <p>Enter some more line of text to see how it works.</p>    
</body>
</html> 