Why my pseudo element ::before is not working?

Question

https://code.sololearn.com/Wp2ZK69fMS9C/?ref=app

Answer 1

Rishi

Because there is

content: url ('link')

And also Google drive image will not work here.

Try this link

https://cdn.pixabay.com/photo/2015/04/23/22/00/tree-736885__480.jpg

Answer 2

A͢J - S͟o͟l͟o͟H͟e͟l͟p͟e͟r͟
But again, this is not working as said in this lesson (https://www.sololearn.com/learning/2257/), why?

https://code.sololearn.com/WM6jvJAL44qb/?ref=app

Answer 3

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