Use the border-top property in CSS to set all the top border properties in a single declaration.
Example
You can try to run the following code to implement the border-top property −
<!DOCTYPE html> <html> <head> <style> p { border-style: solid; border-top: thick dashed #FFFF00; } </style> </head> <body> <p>This is demo text</p> </body> </html>