I know this has been asked - and answered - before. I need to remove all the internal lines from a grid - i.e. the individual cell boundaries. Unfortunately, I can't quite understand the answer (to use custom CSS) as I a) don't know which class to override and b) don't know where to put any code, exactly. I've looked at the two examples until I'm cross-eyed, but could really, really do with another (easier for me to understand!)example
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