click to open doesnt work any more

After making some css changes from the following page https://www.premiumpress.com/forums/topic/click-to-reveal-being-too-responsive-and-disappearing-css-help-needed/, I got everything that I wanted to edit. But after a while, maybe I switched between “click to open” and “click to reveal”.. Dont remember what I did exactly, but now the click to open stopped working, codes won’t show anymore, please help!