outline
The CSS outline property is a shorthand property for setting one or more of the individual outline properties outline-style, outline-width and outline-color in a single rule. In most cases the use of this shortcut is preferable and more convenient.
Example
<!DOCTYPE html> <html> <head> <style> p { border: 1px solid red; outline: green dotted thick; } </style> </head> <body> <p> <b>Note:</b> IE8 supports the outline properties only if a !DOCTYPE is specified. </p> </body> </html>