How can you update the look-n-feel of the Service Catalog?

[robertlankford]

Our service catalog has UI elements that just look ... old.  The Item Ordering Widget, for instance, doesn't float correctly and the buttons on it are old/out of date table html elements with images embedded vs modern UI 16 button elements.

Where is this information stored?  How can I begin to figure out what needs updated and then begin the process of updating it?

/completely new to ServiceNow, btw, as if you couldn't tell by the question!  🙂

[robertlankford]

Thanks for the response.   This is with regard to Self Service.   We are currently and actively looking into creating a Service Portal.

[robertlankford]

Thank you for the response!   Yes.   We are on UI16 (and were previously on UI15).   I don't think all components (like the ones this post is about) were upgraded, however, due to something having been customized prior to the upgrade.