REST Countries API with color theme switcher

I have implemented the functionality of this challenge using vanilla HTML, CSS, and JavaScript. However, I haven't been able to implement the toggle between dark and light mode at this time.

The implemented functionality includes various features such as fetching data, displaying country details, rendering borders as buttons, and navigating to the country page. The user can search for a country and view its flag, capital, population, region, subregion, native name, top-level domain, currency, languages, and bordering countries.