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What are the major differences between HTML5, HTML 4.01 Transitional, XHTML 1.0 Strict, XHTML 1.0 Transitional, and XHTML 1.1 Document?

HTML5, HTML 4.01 Transitional, XHTML 1.0 Strict, XHTML 1.0 Transitional, and XHTML 1.1 are all different versions of the HTML (Hypertext Markup Language) standard used for creating web pages. Each version has its own set of rules and guidelines for how HTML code should be written and how web pages should be structured. Here are some of the major differences between these different versions of HTML:

  1. HTML5: HTML5 is the latest version of HTML and is designed to be more semantic, meaning that it provides better ways to describe the content of web pages. It also introduces several new elements and attributes that make it easier to create web applications, multimedia content, and mobile-friendly websites. Additionally, HTML5 provides better support for offline browsing, drag-and-drop, and form validation.
  2. HTML 4.01 Transitional: HTML 4.01 Transitional is an older version of HTML that was widely used before the release of HTML5. It supports many features that are no longer included in HTML5, such as frames, tables, and font tags. It also includes some deprecated elements and attributes that are no longer recommended for use in modern web development.
  3. XHTML 1.0 Strict: XHTML 1.0 Strict is a version of XHTML that is designed to be more strict than HTML, with a focus on well-formedness and consistency. It eliminates many of the deprecated elements and attributes found in HTML 4.01 Transitional and encourages the use of more semantic markup. It also requires that all elements be properly closed and that all attribute values be quoted.
  4. XHTML 1.0 Transitional: XHTML 1.0 Transitional is a version of XHTML that is more lenient than XHTML 1.0 Strict, allowing some deprecated elements and attributes to be used. It is similar in many ways to HTML 4.01 Transitional but is written in XML syntax, which makes it more compatible with other XML-based technologies.
  5. XHTML 1.1: XHTML 1.1 is a version of XHTML that is designed to be more modular, meaning that it provides more flexibility in the way that web pages are structured. It also includes several new elements and attributes that are not found in HTML or earlier versions of XHTML. XHTML 1.1 is more strict than XHTML 1.0 Strict and requires that all elements be properly closed and that all attribute values be quoted.

Overall, the major differences between these different versions of HTML relate to their focus on well-formedness, consistency, semantic markup, compatibility with other technologies, and support for newer features like multimedia and mobile devices. Each version has its own benefits and drawbacks, and the choice of which version to use depends on the specific needs and requirements of a given project.

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