How can CSS be used to replace the outdated HTML styling in the code?

The issue of using outdated HTML styling can be solved by utilizing CSS to separate the styling from the HTML structure. This allows for cleaner code, easier maintenance, and better flexibility in terms of design changes. By using CSS, you can target specific elements on your website and apply styles to them without cluttering your HTML code. ```html <!DOCTYPE html> <html> <head> <style> /* CSS code to style the HTML elements */ h1 { color: blue; } p { font-size: 16px; } </style> </head> <body> <h1>This is a heading</h1> <p>This is a paragraph.</p> </body> </html> ```