Removing spaces between columns in a SharePoint list (Creating custom hourly gantt chart)

[Jake_Hembree]

I'm trying to make a custom gantt chart using a SharePoint list. I don't want to use the Gantt View because of various conditions that I'm adding to this list later and that concept won't work.

There are a few different things I need help with but mostly, I cannot figure out how to close the gap (white space) between the columns. I've attached an image that explains it better.

I just don't know enough about the different elem types and styles for JSON, I couldn't find a good resource that shows all the types and explains visually how they work.

[#2]

@Jake_Hembree 

Check below JSON formatting samples which might help you:

1. Project Gantt Chart View 

2. Yearly Gantt Chart 

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