[Feature Request]: Improve Customer List page mobile view

### Preflight Checklist

- [x] I have read the [Contributing Guidelines](https://github.com/EnAccess/micropowermanager/blob/main/CONTRIBUTING.md) for this project, if it exists.
- [x] I agree to follow the [Code of Conduct](https://github.com/EnAccess/micropowermanager/blob/main/CODE_OF_CONDUCT.md) that this project adheres to.
- [x] I have searched the [issue tracker](https://github.com/EnAccess/micropowermanager/issues) for a feature request that matches the one I want to file, without success.

### Problem Description

Export button should not overlap in mobile view

### Proposed Solution

Align overlapping buttons and display components correctly in mobile view

### Alternatives Considered

N/A

### Additional Information

_No response_

Start at the Customer List page and reproduce the issue at a mobile viewport using the attached screenshot as the reference. Locate the page's export button and surrounding components; it is done when the buttons and components align correctly without overlap on mobile.

Written by the indexing model from the issue text.