Theming app - sizes in NC 16.0.3

I am using the theming app but I am having some problems with the svg sizes

The Logo and Login image are looking fine

I have the header logo with the same size of the bar (with no margins)
and also an error on the favicon that shows black

Could you please tell me what sizes should be used, I am pretty sure it something I am missing here

Thank you

You weren’t clear what you’re having trouble with - was it just the favicon? Mine are 32x32 and 48x48 and look fine.

Thank you DarkSteve,

I solved the favicon by replacing it with a jpg instead of a svg and works even with 500px. My issue its the bar logo that doesn’t have any margin and therefore looks weird.
I went on documentation but it doesn’t say sizes or formats maybe someone can correct that