A project we're working on requires responsive lists of content comprised of only teaser images and titles. For such lists to look decent, the elements need visual consistency by virtue of being the same height, though the titles may vary greatly in length and in a responsive setting we don't know the viewport size and how many items will be in a given row. Also, in our case the content won't always have an existing image for us to work with.
So there are two main challenges: