I have seen many posts requesting on how to resize the content box in the flashlight theme, and I know that I can set it to a specific size by manipulating the ".content .box " fields in the custom.css file. My question is, how do I set this to a variable, rather than a specific value? In other words, I'd like the content to resize based on the user's window size. I have tried using the "100%" variable instead of "430px", but the content sizing seems to go deeper than just the ".content .box" fields because this change did do anything. Is this possible? if so, is there an easy variable string I could add to the custom.css file?