Added styles to handle fullscreen on near.social and properly display on near.org as well

[Jikugodwill]

• resolves #190

https://github.com/NEARBuilders/gateway/assets/65053264/e90df080-bd83-4f9e-b0a9-8f21329216a1

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Name	Status	Preview	Comments	Updated (UTC)
gateway	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 24, 2024 9:43am

[Megha-Dev-19]

@Jikugodwill if you have tested everything, can you please merge it? It's already approved.