UI Deploy

There is a :checked pseudo class in CSS. I often think of it in connection with the "checkbox hack", in which you use it on a hidden checkbox with the ~ general sibling combinator to do simulate toggling behavior without any JavaScript. It's a hack because now you have these stray form elements on the page that really aren't for a form. Not a huge deal, as I'm sure you can work around it accessibility wise, but there is a way to use this same concept in a totally non-hacky way, on an actual form!