CSS Container Queries Implementation

I want to implement CSS Container Queries for truly responsive components.

**Component Use Cases:**
[Describe components that need container-responsive behavior]

**Current Responsive Approach:**
```css
[paste current media query approach]
```

**Target Containers:**
[Describe the containers and their sizing behavior]

**Browser Support Requirements:**
- Must support: [browser list]
- Fallback needed: [yes/no]

**Specific Breakpoints:**
[Container widths where layout should change]

Please provide:
1. Container query syntax and setup
2. Component implementations
3. Fallback strategies for older browsers
4. Comparison with media queries
5. Container query units usage
6. Best practices and limitations
7. Progressive enhancement approach