I am currently designing a Tumblr theme with 4 columns. Each column is set to be 25% in width and I am using {PhotoURL-500} images which resize proportionally based on window size. However, I am facing an issue with photosets as they are static and causing the columns to collapse. Since I am working with percentages rather than pixels, is there a way to make photosets fit within % columns without causing them to disrupt the layout? Any help would be appreciated! Thank you.