The outline property is a shorthand property that allows you to specify values for multiple properties such as color, style, width of outline.
Example
<html> <head> </head> <body> <p style = "outline:thin solid green;"> This text is having thin solid freen outline. </p> <br /> <p style = "outline:thick dashed #009900;"> This text is having thick dashed green outline. </p> <br /> </p> </body> </html>