Hi,
So this is not exactly what I had in mind for a ‘responsive light box’.
http://www.guthriewatson.com/folio/pen-and-ink-editorial/
A poor outcome on mobile safari and Firefox/Safari desktop versions.
An expand button with a cross in the top right hand corner is as counter intuitive as putting the close button bottom right. These also look almost identical which is just confusing for visitors.
Click on expand and what is the image expanding into, more than half of the image disappears pushing the page apart and requiring the visitor to scroll all round to see the image.
So now I have to disable the plugin and reset all the images that use this plugin.