Fix a styling issue on iOS/iPadOs

[jw-12138]

Related issue: #2247

So, instead of using button elements( including input[type="submit"]) directly on page, I added a label element which preserved the style while remaining the same functionality.

Before

After

Over all, not a big problem but still, an improvement.

[nhooyr]

Hi @jw-12138, thanks for reporting this bug and contributing. ❤️

I've opened #2339 with your commit included for credits and a simpler fix applied where we just disable webkit's native input styles.