Use the CSS box-shadow property to add shadow to elements using CSS. You can try to run the following code to implement box-shadow property:
Example
<!DOCTYPE html> <html> <head> <style> h2 { box-shadow: 10px 10px; height: 50px; background-color: yellow; } </style> </head> <body> <h2>Heading Two</h2> <p>Above heading has shadow.<p> </body> </html>