What does this CSS rule do?

It creates a blurry headingIt creates a normal heading

It creates a blurry heading.

<html> <head> <style>h3 { filter: blur(2px); } </style> </head> <body> <button>Click to Read More</button> <h3>Man Scrambling To Furnish Apartment Before Date Shows Up</h3> </body> </html>]]>