Is there any way to make grid lines white (invisible?). Current UI is excel like, which is great, but want to only show cells that have data and hide rest of columns and rows?
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You can hide grid lines by using CSS styles. Please check the following sample on JSFiddle: https://jsfiddle.net/flexmonster/bsu46mba/
Also, here is the tutorial with the tips how to customize the appearance:
Please inform me in case of further questions.