Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <head> <style> p.ex1 {margin-right:4cm} </style> </head> <body> <p>A paragraph with no margins specified. A paragraph with no margins specified. A paragraph with no margins specified.</p> <p class="ex1">A paragraph with a 4cm right margin. A paragraph with a 4cm right margin. A paragraph with a 4cm right margin.</p> <p>A paragraph with no margins specified. A paragraph with no margins specified. A paragraph with no margins specified.</p> </body> </html>
Result:
W3Schools.com - Try it yourself