angular (js) alert with a large image

I have a project which involves crowdsourcing elements. As part of that, I would like it when a user enters a specific html page, that they will be prompted with a nice alert, with a "large" (Hi-Def, nice detail) image, a question below it, and a "Yes"/"No" choice.

I have reviewed SweetAlert for this, but the images are very small and unclear in it:

Is there any way to use SweetAlert with a larger image, or a different solution to this problem?