I fought with this for an hour. Had to paste it into dreamweaver to figure out what I was doing wrong.
In the default font (not sure if there is a way to change it), the '1's look almost identical to the 'l's.
'ol' makes an "ordered list", 'o1' makes an incorrect answer.
<!DOCTYPE html> <html> <head> <title>my title</title> </head> <body> <h3>Most annoying TV celebrities</h3> <o1> <li>Dr. Phil</li> <li>Tyra Banks</li> <li>Paula Dean</li> </o1> <h2>Top three things I can do for Mother's Day</h2> <ol> <li>Raindrops on roses</li> <li>Whiskers on kittens</li> <li>Bright copper kettles</li> <li>Warm woolen mittens</li> </ol> </body> </html>