<!DOCTYPE html> <html> <style> progress { padding: 5px } body > progress:nth-child(1) { -moz-appearance: none; } body > progress:nth-child(2)::-moz-progress-bar { -moz-appearance: none; } body > progress:nth-child(3) { background-color: red; } body > progress:nth-child(4)::-moz-progress-bar { background-color: red; } body > progress:nth-child(5) { border: 2px solid red; } body > progress:nth-child(6)::-moz-progress-bar { border: 5px solid red; } </style> <body> <progress></progress> <progress></progress> <progress></progress> <progress></progress> <progress></progress> <progress></progress> </body> </html>