Board Thread:Support Requests - Designing Your Wiki/@comment-32894576-20191127170853/@comment-168424-20191128003039

Okay, let's start again. Why do you need CSS? Have you read Help:Community CSS and JS? Have you read Help:CSS best practices?

If not... go and read them and re-ask your questions.

The way you posed your question made it sound like you added some CSS customization and wanted to know how to enable it. If you didn't add any CSS changes... what is there to enable?