Define a title for your HTML document:
The <title> tag is supported in all major browsers.
The <title> tag is required in all HTML documents and it defines the title of the document.
The <title> element:
Note: You can NOT have more than one <title> element in an HTML document.
Tip: If you omit the <title> tag, the document will not validate as HTML.
The <title> tag also supports the Global Attributes in HTML.
HTML tutorial: HTML Head
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