## Why

The current dropdown component does not meet the desired style and functionality. The text is too large, it lacks a proper boundary, and it doesn't support multiple selections easily.

## What Changes

- Refactor the `Dropdown` component to improve its styling and layout.
- Incorporate checkboxes within the dropdown to allow for multiple selections.
- The component's text size and boundaries will be fixed.

## Capabilities

### New Capabilities
- `multi-select-dropdown`: Implement a dropdown component that supports multiple selections using checkboxes.
- `dropdown-styling-fix`: Correct the styling issues of the dropdown component.

### Modified Capabilities
- None

## Impact

- This will affect the `Dropdown` component and its parent component, `FilterBox`.
- The changes will be contained within the `frontend` directory.