[Una Q]

Hello, Annelisa!

Thank you for the reply! I'm sorry for the delay in answer.

I've checked your CSS theme and it works fine. That's how tabs look like in my test store:



Probably, you've added the code to the duplicated Red theme, so that's why it hasn't worked. I would recommend you to create a new CSS theme in your Ecwid control panel->Settings->Design->Create CSS Theme and paste your code there:



Then activate the theme and save the changes.

I hope it will help! If you have any questions, please don't hesitate to ask.

Best regards,
Una Q., Ecwid Support Team