Dead simple. It adds a button on your toolbar that opens a box to add your CSS. It reloads the page with your new CSS immediately so you can see if it works.
gets put into Header or Footer depending where you put it. It is not the “cleanest” solution" because this is inline-CSS, so it will not be compressed, minified, cached, as if you have a real CSS file.
For that purpose, you would compile your CSS file and link to it from the Header Code box. If you really want to get a whole lot of styling, you can make a custom theme and put all styles into that, this will help to reduce redundant style declarations, is a little bit more work, but a more clean and portable solution.
I purchased Theme Styling Tool, but my current site has many problems, so I’m thinking of temporarily installing a new ConcreteCMS and creating a backup of the exact same site. Is there a way to check the current site’s CSS?
I’ve edited the CSS several times, so checking each line individually through “Design” → “Customize” → “Custom CSS” is impractical.
Is there a way to export the CSS, like in ConcreteCMS 8.5?