Make it more obvious which tab is the active tab

I think our current tab UX doesn't really make it clear which one is the active tab. There is the blue color but for some reason it does not appear that obvious to me.

Maybe @itsalexcm would have some ideas or input :)

In the example below, my brain tells me I'm on the 2nd tab, then I tell it "no, why would the 2nd tab be the default one, we've just opened the page? And look at this blue color, this is it!" and we can resume our reading, but only after 4 seconds of internal freeze.