font:
a style sheet property ( STYLE tag), or a style property inside a tag (STYLE attribute). Sets the object's font properties, or imports the font.
When setting all properties, the sequence is important. After inserting into the tag, remove any number of unnecessary properties without changing their order.
font: italic small-caps bold 25px / 40px arial 'arial narrow'

1. font-style: normal italic oblique
2. font-variant: normal Small-caps
3. font-weight: normal bold bolder lighter
4. font-weight: 100 200 300 400 500 600 700 800 900
5. font-size: xx-small x-small small medium large x-large xx-large
6. Font-size: larger smaller 100%
7. Font-size: 1px 1mm 1cm 1in 1pt 1pc
8. line-heght: normal 1 1px 1mm 1cm 1in 1pt 1pc 1%
9. font-family: Arial 'Arial Narrow' Courier Roman Tahoma 'Times New Roman' Symbol Terminal Verdana