1. Introduction: The Messy Code Problem You download a CSS file from the internet. It is a wall of text with no line breaks or indentation. Everything is compressed into a single line or scattered randomly across hundreds of lines. Finding a specific style rule feels like searching through a maze with a blindfold on. You are reviewing code from a team member. Their CSS is formatted completely differently than yours. Some selectors have spaces after colons, others do not. Indentation is inconsistent. There is no rhythm or pattern to follow. Reading it is mentally exhausting. You copy CSS from a website's source code to study how they styled something. The CSS is minified (compressed to the smallest possible size to load faster). It is unreadable. Every property is crammed together on one line. You are writing CSS yourself, and it is growing faster than you expected. After 500 lines, it becomes a tangled mess. You cannot find the rules you need. Debugging style issues takes forever b...