this has been posted about before, and still seems to be an issue in some 'responsive templates'.
Images posted within modules such as groups, events etc... are not always responsive.
Im pulling my hair out trying to get mine to work!
Using hypernova template on a project, template is nice, easy 'design' config area with the template.
However, I still get all images I upload within modules at a fixed width.
tried various methods to fix but none worked so far!
suggestions welcome... (appreciated!)