This document discusses CSS font properties that can be used to format text, including font-family, font-size, font-weight, font-style, font-variant, line-height, text-indent, text-align, text-decoration, text-transform, letter-spacing, and word-spacing. It provides examples of how to set these properties in CSS code and explains what values they can be set to, such as keywords like normal and bold for font-weight or length measurements for properties like letter-spacing.