Centering things in CSS feels like a rite of passage every developer has to suffer through. I once spent a solid three hours on a flexbox layout because I forgot the justify-content property. That missing line of code feeling is the worst mix of relief and pure frustration. You finally get it working and just stare at the screen for a minute.
That "missing line of code feeling" is so real. I've lost entire afternoons to a forgotten semicolon in a totally different file. The victory feels so hollow when the fix is that small.