Widen alt style element

[Fweddi]

What does this change?

Before:

After:

We want more real estate for this type of element as it is closer to a document level item than an element level item. It also helps us deal with fitting our nested elements inside this element.

We now omit the headings for these fields because we want it to look closer to a document. We should consider adding better placeholders for these fields in a future PR (not trivial because placeholder logic is a bit of a muddle).

[twrichards]

LGTM, left a few comments?

I presume placing the controls above & below instead will be in a follow-up PR?

Any chance we could increase the left padding inside the inputs and increase the negative margin so the boxes are actually full width but text still aligns with stuff outside the repeater? (perhaps ignore if this doesn't affect composer, because no outer grey border) to essentially avoid this uncomfortable alignment on the left...

[Fweddi]

LGTM, left a few comments?

I presume placing the controls above & below instead will be in a follow-up PR?

Any chance we could increase the left padding inside the inputs and increase the negative margin so the boxes are actually full width but text still aligns with stuff outside the repeater? (perhaps ignore if this doesn't affect composer, because no outer grey border) to essentially avoid this uncomfortable alignment on the left...

Yes, I want to address the nested controls in a follow-up PR. I think I see what you mean about the alignment, I'll have a look into this.