Letter & Word Spacing

The attribute settings letter-spacing:value and word-spacing:value are largely self explanatory. The default value is normal which is equivalent to a numeric setting of 0. It can be changed to a value using any legal CSS length unit. Negative values can be used to cause text to appear compressed or even overlapped.

This is an inherited property - i.e. in a child element, if not assigned, it takes the corresponding value from the containing parent.