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: 20px; border:1px solid red;"> This is demo content. </p> <p style = "padding-bottom: 20%; border:1px solid red;"> This is another demo content. </p> </body> </html>