The padding-bottom specifies the bottom padding of an element. It sets the bottom padding (space) of an element. This can take a value in terms of length of %.
Example
<html> <head> </head> <body> <p style = "padding-bottom: 10px; border:1px solid red;"> This is a paragraph with a specified bottom padding </p> <p style = "padding-bottom: 10%; border:1px solid red;"> This is another paragraph with a specified bottom padding in percent </p> </body> </html>