<Sup> (Superscript Tag)
is used to show a text above the normal base line.
Nano is a metric unit prefix, which is also denoted as 10-9
- It helps to show the mathematical symbols exactly as mentioned in books.
- It is necessary to add proper closing tags for this tag.
It is available in the previous versions of HTML.
It supports both Global Attributes
and Event Attributes
It is applicable to all the browsers.