Images max width:

I see that some modal image (like https://plone.org/news/old-news/munich-plone-5-sprint-and-party ) are too wide (click on the image)

.modal-image img { max-width: 100%} will fix this, but there is probably not any places where the images should be wider than 100 anyway ?

so maybe just:
img { max-width 100%; } 

or #content img 
