Help image not showing on my porfolio page

Hi everybody I need help with my image I think I put it right on CSS under showcase but my image is still not showing can some one please take a look at my coding and tell me what I done wrong, thank you so much.

You have a missing " after col-md-6 at line 33.

There’s also no image because the src attribute is empty. You need to put in a URL that points to an image file.

Thank you the image is now showing.