Client demo Memes

The universal law of client demos: make a "tiny" CSS tweak right before presenting, and suddenly a wild bug appears out of nowhere saying "Bonjour!" The Murphy's Law of frontend development states that the probability of embarrassing bugs approaches 100% the moment a client is watching. That one-pixel adjustment you thought was harmless? It just broke the entire layout in Safari on odd-numbered iPhone models while Mercury is in retrograde.