Website background tiles on mobile devices

Hi everyone,

I’ve made a business ecard and it works fine on desktop browsers, but the background tiles on mobile devices instead of looking like what it does on desktop. I’m super new to coding (maybe more mobile specific stuff will come up later in the course?) and have probably butchered my code trying to figure this out now. If anyone could take a look at my code and figure out what’s going wrong, I’d love to know the mechanics behind why it isn’t working and how I can fix this moving forward.

This is the codepen for it:

This is the website:

Thank you!!

Are you trying to make the Codepen look like the website link? I just looked at your Codepen and do not see the photo or background used in your un-commented code.