Example Concept: Tailwind CSS supports dark mode by using the "dark" variant, which can be configured to activate based on the user's system settings or a custom class. By default, Tailwind uses the "media" strategy, which applies dark mode styles when the user's system is set to dark mode. Alternatively, you can use the "class" strategy, where dark mode is toggled via a specific class (e.g., "dark") on the root element, allowing for more controlled and customizable dark mode styling.