Elena Drakulevska explains why padding is so important between visuals in Power BI reports:
Now that we’ve all learned to love rounded corners, let’s talk about another quiet champion of good design: padding.
You know, that tiny bit of space inside your visuals that keeps content from being awkwardly pressed right up against the border, with no room to breathe. Yeah. That.
The ideal here is to have densely informative visuals that have sufficient padding to make it easy for a viewer to move between them.