How can I keep my current Tumblr theme responsive so it adapts to the viewable area of the display being used, but doesn't exceed the size of the images being displayed?
Ex: I have a photoset here: http://abitterredpill.ca/post/73970234434/when-i-get-married-my-groomsmen-are-going-to-hate
Obviously it's blown up way bigger than the images were meant to be viewed. I'd like to be able to set a max size so that images that actually span high resolutions will still be stretch to fill the screen, but smaller images don't get blown up any bigger than their original size.
Also, it'd be rad to know how to put borders in that photoset. I hate how all of those images are flush up against one another.
Cheers in advance.