When you have images with
width: 100%;
height: auto;
contained in a box, depending on the aspect ratio(I think) of the image and the dimensions of the box it will not always populate the entire height of the box.
You don't really notice this when there is just one row of these images side by side but if they go onto a new row you can see a few pixels space between the top and bottom row. The boxes are touching but the images in the box are not taking up all of the height of the box.
I can't set a fixed height and width on these boxes/images as they are supposed to be fluid.
I'd like to get a solution to this without Javascript if possible but if that's the only solution I will take it.
JSFIDDLE