Here's a complete expense tracking app with interactive features using Tailwind CSS and vanilla JavaScript: ```html SmartSpend - Expense Tracker

SmartSpend

Total Spent

$0.00

This month

Biggest Expense

$0.00

-

Daily Average

$0.00

Based on 30 days

Recent Expenses

Date Description Category Amount Actions
No expenses recorded yet

Spending by Category

No data available yet
``` This expense tracker includes: 1. **Interactive Features**: - Add new expenses with amount, description, category, and date - Filter expenses by category - Delete expenses with confirmation - Responsive design that works on mobile and desktop 2. **Data Visualization**: - Summary cards showing total spent, biggest expense, and daily average - Bar chart showing spending by category - Detailed category breakdown with percentages 3. **Data Persistence**: - All expenses are saved to localStorage - Data persists between sessions 4. **User Experience**: - Clean, intuitive interface - Form validation - Helpful empty states - Smooth animations and transitions The app is completely self-contained in a single HTML file with no external dependencies (except Tailwind CSS). All JavaScript is included in script tags.