A negative margin below Tabs causes ACF fields below to be shifted to the right in firefox
if the ACF fields below are not full width. (e.g. set to 50% width)
Firefox interprets the negative margin as reaching into the plane below.
Looks like this: https://i.imgur.com/D1Rv6Yi.jpg
but it should look like this: https://i.imgur.com/vAeW9Pw.jpg