Board Thread:Support Requests - Getting Technical/@comment-253018-20191102224144/@comment-9605025-20191110004500

Most of the examples have a space but if you look at the example specific to changing the infobox background, you will see that there isn't one. The reason for this is explained in this section of the help page. - Edit:

If you want to learn more about the different types of CSS selectors, I suggest you start by reading this.