Mobile Image not displaying correctly

[MsMojo]

I have a great image that I have created to work perfectly on a Weebly website theme in a Tall or Short Header. 

It perfectly expands to fit the width of the browser.

When I go to view it on the mobile devices, it doesn't fit the same. It's takes a portion of the centre of the image and leaves out all the side bits - as in it should shrink to fit the size of my window in the mobile, so I can see the whole image.

How can I fix this on the mobile?

[Brodie]

MsMojo, the site I find in your account has a custom theme.

So you would need to troubleshoot by publishing it under a standard, responsive theme.

Beyond that, Weebly cannot provide support on custom code.
(But our Community members might have some tips and tricks for you?)