Ignore a growing beast long enough and eventually it guards the dungeon. Editor’s Note: This article originally appeared on RandomThoughtsInTraffic.com and has been revised and expanded for StackNScroll as the closing chapter of The CSS Codex. The original edition explored how CSS codebases gradually become more difficult to maintain as shortcuts, overrides, and exceptions accumulate over time. This updated version expands that discussion with deeper examination of architectural drift, technical debt, component design, specificity management, long-term maintenance practices, and the warning signs that experienced engineers learn to recognize before problems become crises. It also serves as a capstone for the broader lessons explored throughout The CSS Codex, bringing together concepts…