- Added new 'practice.md' file for system design interview questions with solutions, improving accessibility for candidates.
- Created 'reminder.md' to serve as a quick reference for system design solutions, guiding users through the problem-solving process.
- Updated 'design-glance.md' to clarify the design of the personal budget tracking app (Mint.com) and improved the structure of related content.
- Revised '.gitignore' to include 'site/' for mkdocs deployment and ensure proper file management.
- Made minor updates to 'mkdocs.yml' for better organization and clarity in documentation navigation.
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