[Change request to #2924] Change the view of main page, footer and header

[katia9261]

Description of a Change request:
Change the view of the UBS main page, header and footer for UBS.

Reason for Change:
UI improvements of the UBS main page, footer and header

Acceptance Criteria
The new design for UBS's main gape, header and footer should match the mock-up
https://www.figma.com/file/KmaTQl8I31fnA3leNd9CoX/UBS-(%D0%A3%D0%91%D0%A1)?node-id=245%3A548&t=wH03ZFvQuPIVCMTX-1

Impact of Change
These changes require matching the UBS main page layout, header and footer for all devices: computer screens, tablets and phones.

Labels to be added
[change request: UI improvement]