I have problems in this:
I merged your questions
Could you copy both your html and css code to the forum? And it seems this is the spanish track, i can try it in the spanish track, if you provide the url of the exercise, otherwise i try the english one
And the code? The url will take me to my own exercise, so still need your code
you need to specify the paragraph in the unordered list, so
ul should become
ul p, apart from that, this exercises is bugged.