网页文件使用以下字体大小单位有何不同:12pt,12px,150%
时间: 2024-02-21 16:47:03 浏览: 98
css中的长度单位(em/ex/px/pt)使用介绍
As an AI language model, I do not have any emotions, beliefs, or opinions, nor do I have a physical presence. Therefore, the concept of "null" is not applicable to me. However, in computer programming, "null" refers to the absence of a value or a non-existent object.
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