Create the Application's Main Layout

[felixtro]

Description:

• Create the semantic foundation and overall structure of the page.

Tasks:

• Create header, main, and footer sections.
• Add a title and a short introduction.
• Create areas for controls, the country card, and favorites.
• Use semantic HTML elements.
• Avoid unnecessary div elements.

Acceptance Criteria:

• The page has a clear and semantic structure.
• Content is displayed in the correct order.
• The page can be navigated in an intuitive way.