CSS最大宽度属性
的 最大宽度属性用于设置一个盒可以是最大宽度。max-width属性的值可以是数字，长度或百分比。
<html>
<head>
</head>
<body>
<p style = "max-width:100px; height:200px; border:1px solid green; padding:5px; margin:10px;">
This paragraph is 200px high and max width is 100px
This paragraph is 200px high and max width is 100px
</p>
<img alt = "logo" src="/css/images/logo.png" width = "100" height = "100" />
</body>
</html>