This sets the font to helvetica This can be a list of font names separated by comas, with the availability of the fonts at the user's end being the determining factor. If the specified font is not resident on the user's computer, the browser will substitute with the closest match. This attribute lets you set exact point sizes, whereas the size attribute lets you set the font size relative to the default size. Displays text in a fixedwidth font , typically courier. All letters and spaces have exactly the same width.
Courier is a fixedwidth font.
This tag can be used to change a word or phrase within a paragraph. There are other differences. Attributes from the Appearance table above can be used in combination with the attributes below. This tag is used to emphasize section headings. Text size is changed by n and is also bolded.