Outline
Outline is like a border surrounding the border of the element. CSS has
different outline properties as it is there to the border
Sample Code
<html> <head> <style> h1 { outline:1px solid black; border:2px dotted blue; } </style> </head> <body> <h1>A sample of outline </h1> </body> </html>
All Outline Properties
Outline
Outline-top
Outline-top-width
Outline-top-style
Outline-top-color
Outline-right
Outline-right-width
Outline-right-style
Outline-right-color
Outline-bottom
Outline-bottom-width
Outline-bottom-style
Outline-bottom-color
Outline-left
Outline-left-width
Outline-left-style
Outline-left-color