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>