Help me- não sei o que tem errado no CSS desse exercício que é sobre HTML

Continuing the discussion from Inserting images:

@discobot

Hi! To find out what I can do, say @discobot display help.

@discobot display help

I currently know how to do the following things:

@discobot start {name-of-tutorial}

Starts an interactive tutorial just for you, in a personal message. {name-of-tutorial} can be one of: tutorial, advanced tutorial.

@discobot roll 2d6

:game_die: 3, 6

@discobot quote

:left_speech_bubble: People grow through experience if they meet life honestly and courageously. This is how character is built. — Eleanor Roosevelt

@discobot fortune

:crystal_ball: You may rely on it

@discobot start {name-of-tutorial}