The content of a monospaced element is monospaced text. Most of the fonts are known as variable-width fonts because different letters are of different widths (for example, the letter 'h' is wider than the letter 'i'). In a monospaced text, however, each letter has the same width.
<tt>Content</tt>
You can apply tt element to any element and use any where within a HTML document.
Monospaced is a pair tag and output of tt element is monospaced text like you can see in above example.
Open notepad or any other text editor, follow the following points.
save file with name task.html or task.htm and then open it using any browser and see results.
Don't forget tt is non empty element which means it always comes in pair.