KHi @DevHunteer. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. 
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I apologize, but I don't have enough accurate information in the provided knowledge sources to answer your specific question about changing font size in NavigationMenu for UI v3 and Tailwind CSS v4.
The knowledge sources provided contain information about Nuxt UI components, but they don't specifically mention UI v3 or Tailwind CSS v4. Additionally, there's no direct mention of a NavigationMenu component.
For the most up-to-date and accurate information on customizing Nuxt UI components, I recommend checking the official Nuxt UI documentation or reaching out to the Nuxt community forums. They would be able to provide you with the most current guidance on working with specific versions of UI and Tailwind CSS.
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Note: you can ask me a follow up question by @ mentioning me again
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I apologize, but I don't have enough accurate information in the provided knowledge sources to answer your specific question about changing font size in NavigationMenu for UI v3 and Tailwind CSS v4.
The knowledge sources provided contain information about Nuxt UI components, but they don't specifically mention UI v3 or Tailwind CSS v4. Additionally, there's no direct mention of a NavigationMenu component.
For the most up-to-date and accurate information on customizing Nuxt UI components, I recommend checking the official Nuxt UI documentation or reaching out to the Nuxt community forums. They would be able to provide you with the most current guidance on working with specific versions of UI and Tailwind CSS.
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Note: you can ask me a follow up question by @ mentioning me again
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