Add rounded corners to the <div> tag by using the correct shorthand property with the "15px" value.
<!DOCTYPE html> <html> <head> <title>Title of the document</title> <style> div { width:200px; border: 1px solid grey; background: purple; color:white; padding: 30px; </style> </head> <body> <div>A block-level element is an HTML element that starts on a new line and takes up the full available width of its parent element’s horizontal space. </div> </body> </html>