Well the context is the above but anything similar to that. Basically if I'm understanding it correctly, were I to set the height of the nav bar to like 6%, then what would happen if the content there was doubled and thus the page was longer? Wouldn't the 6% become significantly larger in proportion even though it is still on the same resolution? It seems like it'd be inconsistent in that regard so I'm wondering if that is how it works and if so what is the best way to handle it. For content obviously the height doesn't matter as that's on the fly anyway.
But if I say set a specific height for the logo, what would happen if the site was then viewed on a smaller resolution? Will I have to program in different heights for different screen-sizes?