Altering the letter-spacing changes the space between individual characters. This paragraph has normal spacing.

Positive letter-spacing values increase the space between every character.

Negative letter-spacing values bring the characters closer together.

Here is a regular headline

Here is a headline tightened

A code example from Stylin’ with CSS, Third Edition by Charles Wyke-Smith. Visit stylinwithcss.com for more CSS information and updates.