Board Thread:Support Requests - Getting Technical/@comment-28083312-20170111171103

I notice that here on Community Central & also on the Dev Wiki, code wrapped in the  &   statements have a thin, dotted border around them, like this for example: This appears not to be the default standard for all of Fandom, since this does not occur on some other Wikis. I assume this had to be configured via CSS, but looking through the CSS pages here & on the Dev Wiki has resulted only in my confusion, mainly because I’m still fairly weak when it comes to CSS. Can someone point out which snippet is used to produce this, & where it should go on other Wikis? Also, a way to force the background color for  functions to be white would also be most appreciated (I doubt it is necessary here since the background theme is already white). 