Title: Update Dashboard with Style and Structure Improvements

[amalbouazza]

Hello,

This pull request includes modifications to the dashboard, aiming to enhance its style and structure. Here's a summary of the major changes:

HTML (dashboard/ index.html):

Added semantic tags to improve structure and accessibility. Rearranged elements for a more logical layout. Fixed improperly closed tags and minor syntax issues.

CSS (dashboard / style.css):

Refactored the stylesheet for better readability and organization. Standardized class names to follow conventions. Added explanatory comments to enhance code understanding.

These changes are intended to optimize code maintainability and improve the development experience. Feel free to provide feedback or suggestions.

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