Unhandled CSS Ruining Life

There is a moment in the life of almost every mature frontend when CSS stops feeling like a tool and starts feeling like archaeology. You open one screen and the primary button has one height. On another screen, it is almost the same height, but not quite. Inputs look consistent until you open a modal. Selects behave until a page level override wins. Somewhere in the codebase there is a global stylesheet that still matters, a component stylesheet that matters more, and one deep selector that mat