How can CSS be utilized instead of HTML tags like center and br for better code structure?

Using CSS instead of HTML tags like center and br can lead to better code structure by separating the presentation from the content. This helps in making the code more maintainable and scalable. To center elements horizontally, we can use the CSS property "text-align: center;" on the parent element. For line breaks, we can use the CSS property "display: block;" on the element to create a new block-level element. ```html <!DOCTYPE html> <html> <head> <style> .center { text-align: center; } .line-break { display: block; } </style> </head> <body> <div class="center"> <p>This text is centered using CSS.</p> </div> <span class="line-break"></span> <p>This is a paragraph with a line break using CSS.</p> </body> </html> ```