How do XHTML, HTML4 and HTML5 difference code example
Example: differences between html and xhtml
In HTML, you can do this:
<meta charset="UTF-8"> and <meta charset="UTF-8" />
In XHTML you have to do this:
<meta charset="UTF-8" />
You can also do this in XHTML:
<custom-tag />
but you can't in HTML.