The line-height property is used to set the height of a line of text. The value of the line-height property can be a number, a length, or a percentage.
Example
<html> <head> </head> <body> <p style = "width:300px; height:100px; border:2px solid green; padding:5px; margin:10px; line-height:30px;"> This paragraph is 300 pixels wide and 100 pixels high and here line height is 50 pixels. </p> </body> </html>