Best practicesTailwind v4Custom class name to show the autocompletion (default to className)group-hover with prefix:not in tailwindColor preview doesn’t show in VSCode (preview = a square containing the color before the class)Tailwind’s preflight break existing stylesUse both Bootstrap and Tailwind → naming conflictsProblems with Tailwind CSS IntelliSense VSCode extension!importantcalc@headless-ui's Listbox with createPortal and @floating-ui