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This article mainly shows you the difference between XHTML and HTML, the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor to take you to study and learn "what is the difference between XHTML and HTML" this article.

The differences are as follows:

1. XHTML elements must be nested correctly

Second, the XHTML element must be closed

1. Non-empty tags must use the closing tag.

2. An empty tag must also use a closing tag, or its opening tag must end with / >.

The label name must be in lowercase letters

The XHTML specification defines that tags and attributes are case-sensitive.

The XHTML document must have a root element.

All XHTML elements must be nested within the root element. All other elements can have child elements. Child elements must be paired and nested within their parent elements.

The basic document structure is as follows:

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