feat: add footer styling

[hmehta-adobe]

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #

Test URLs:

• Before: https://main--hmehta-qantas--aemdemos.aem.live/gallery/
• After: https://footer--hmehta-qantas--aemdemos.aem.live/gallery/

[aem-code-sync[bot]]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed. In case there are problems, just click a checkbox below to rerun the respective action.

• [ ] Re-run PSI checks
• [ ] Re-sync branch

Commits

* [d7ec765](https://github.com/aemdemos/hmehta-qantas/commit/d7ec7650bf306d1c9f53fbf597196b0aab450fe8) :white_check_mark: (latest) * [06725f0](https://github.com/aemdemos/hmehta-qantas/commit/06725f00aa4a8ddf7abbf261a5fdcab2a4dbef61) :white_check_mark: * [e399d07](https://github.com/aemdemos/hmehta-qantas/commit/e399d07486e70239d70a8193a6b34adb1f60020f) :white_check_mark: * [5f15d63](https://github.com/aemdemos/hmehta-qantas/commit/5f15d6384eb1872211d463836bd08919ba4bd7ca) :white_check_mark:

[aem-code-sync[bot]]

	Page	Scores	Audits	Google
:iphone:	/gallery/
:desktop_computer:	/gallery/