margins
<!DOCTYPE html> <html> <head> <title>Spacing Example</title> <style> .spacer { margin-bottom: 20px; } </style> </head> <body> <div class="spacer"></div> <p>This is a paragraph with some space below it.</p> </body> </html>
padding
<!DOCTYPE html> <html> <head> <title>Spacing Example</title> <style> p { padding-bottom: 20px; } </style> </head> <body> <p>This is a paragraph with some space below it.</p> </body> </html>