My goal is to style the background of inline code blocks to have a gray background, similar to the style on StackOverflow. In fact, this SO comment purports to allow just that.
I'm a Space Admin and can visit the Look and Feel page:

Following the instructions on the SO link above, I tried to change the style in a few different ways but had no luck.



Is this not the appropriate way to provide Space styling? Is the {style} macro something unsupported / 3rd party?