Centering Text in a Flow Chart

I’ve almost knocked out this infographic using the flow chart tool but there’s one bit that’s a bit stubborn. The list consists of 6 items that are only images and a 7th item that is only text. This last item only appears centered on smaller windows/devices. On large screens it always appears on the left third of the page. I’ve dug around everywhere I can think of but I cannot seem to find a way to center this information on a larger screen. Does anyone know if this can be controlled and where the function is that controls it?