Thanks !!!
this works, when I update Nextend then this changes will be lost ?
So if yes, can you get me a hint how to do a workaround, that my changes are still there
I have a child theme with a style.css but my coding experience is limited and I don not know how to translate the .less code to approriate .css code which overrides the .less code in the nextend plugin
@tobiasbg: Thanks, for the quick answer.
I use Magic Liquidizer Responsive Table Plugin to make the TablePress tables responsive. I will have a look into and try to get rid of the second slash.
Maybe the Duplicator Plugin can handle JSON escaped slashes.