Better asthetique to show case what's possible

Only a proposition, but looking at the Dash-Mantine VS Dahs-Material-UI, we are lacking behind 

- The overall UI of the site could be improve a bit, to show case what's possible
    - Checkout: https://www.dash-mantine-components.com/ 

- Then we can try to propose "backlink" on other project to this one, like:
    - https://www.dash-extensions.com/sections/installation