border-bottom-width
The border-bottom-width CSS property sets the width of the bottom border of a box.
Syntax
border-bottom-width: 10em /* Any
border-bottom-width: 3vmax
border-bottom-width: 6px
border-bottom-width: thin /* A keyword */
border-bottom-width: medium
border-bottom-width: thick
border-right-width: inherit
Example
<!DOCTYPE HTML> <html> <head> <title>CSS Tutorials</title> <style> div { border-bottom-width: thin; border-bottom-style: solid; border-bottom-color: #000; } </style> </head> <body> <div> border bottom style </div> </body> </html>