Hello, Gewoonbovenaan,
Thank you for getting in touch with us.
We added the next code https://prnt.sc/StT4f3yyAquC , the result is – https://prnt.sc/d3EHuOaVkzpQ
To apply mentioned styles for all pages with tabs, please follow the next steps:
1/ https://prnt.sc/hYkAsSuQXqua – add this custom class
2/ move code from the custom CSS for page area into Theme Options > Theme custom CSS.
We hope this information is helpful.
Kind Regards,
8theme team