fix: responsiveness in buyer portal (#689) (#732)

* fix: improving responsiveness in jsx

* fix: improving responsiveness for tablet/small desktop

* fix: new div for shorter dimensions

* style: comment removal

* fix: measures in review

* style: fixing nits

* Update apps/storefront/src/components/layout/B3Layout.tsx



* fix: scroll in media query

* fix: improving for pixel perfection

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Co-authored-by: bc-marco <109162781+bc-marco@users.noreply.github.com>