Fotomoto buttons centered on the screen

I have an image gallery with a number of images that have been manually inserted (opposed to using the Gallery tool in wordpress). My problem is that the fotomoto buy buttons seems to be centered in the middle of the content area and stacked up upon each other, rather than above the individual image.

I have tried altering the CSS, as advised in the troubleshooting pages, but to no avail.

The first row of images on the link below should described the issue.

Please advise, any help would be greatly appreciated.

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