Board Thread:Support Requests - Getting Technical/@comment-906884-20200623151709

So as the above on Logopedia - Template:Tabber there is "NCIS Tab #1" and a small gap and a line underneath, how can I remove the gap and line? It seems to only appear with this template using the ... code, but not using |-|Header=Content which I can't use for the template (I think?) 