The Measure (or sometimes “The Measure”) in typography is the length of a line of text.
The measure of a text influences legibility.
For:
Generally, if the measure is wide, the leading of a text (ie line height) should be increased—if the measure is short, it can safely be decreased.
Reverse text, i.e. white text on black also requires more leading.
myTextStyle {
font-size: 18px;
line-height:1.25 em;
}