fix extra right space on mobile devices

[luisabarca]

Fix the extra right padding that was breaking the responsive design on mobile devices.

Ticket:

• https://github.com/FormidableLabs/nextjs-sanity-fe/issues/153

Before:

After:

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Name	Status	Preview	Comments	Updated
nextjs-sanity-fe	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Jan 19, 2023 at 3:20PM (UTC)

[sarmeyer]

@luisabarca the padding change looks good! Are you planning on handling more changes in this PR?

[luisabarca]

@luisabarca the padding change looks good! Are you planning on handling more changes in this PR?

Nope (I forgot to remove the WIP tag), I will address the slicing selection issue in a separate PR