Board Thread:Support Requests - Designing Your Wiki/@comment-44973133-20200202032353/@comment-44807868-20200202035856

You need to copy the CSS for tabbers from that wiki to your wiki. Help:Tabber also explains about tabbers CSS styling. It won't require a template.

If you're still confused, please link the wiki where you saw that design as well as your wiki. Remember linking always helps when you're asking for help!