Edit: I realized I forgot to add "" in "color:red"
I'm not sure, though, why the preview editor would show the correct result in cases when the code isn't.
It seems like I did everything correct in this code, where I had to make "red" red, but it still gives me an error, saying I should make sure that only the "red" is enclosed in span tags. Any idea why this is happening? The preview window gives me the result I want. Is it a bug?
<!DOCTYPE html> <html> <head> <title></title> </head> <body> <p>This text is black, except for the word <span style=color:red>red</span>!</p> </body> </html>