Network Admin Dashboard Right Now widget button alignment

[sabernhardt]

The Right Now dashboard widget for networks can show the submit buttons for Search Users and Search Sites higher than their respective input fields when they are next to each other. On large screens, that is due to a vertical-align mismatch. Under the 782px breakpoint, the submit buttons have a bottom margin.

Also, each submit button can wrap below the input field without any space between the two.

• In English, I only saw that occur when the viewport was 350 pixels or narrower.
• In French, I saw it in the 783-1095 range and at less than 527 pixels wide.

[sabernhardt]

adjusting vertical-align and margins

[sabernhardt]

Right Now widget at multiple viewport widths, in English, before and after applying the patch

[sabernhardt]

CSS flex is worth considering too, but I was able to achieve the alignment and spacing with only a few lines.

[SergeyBiryukov]

In 58895:

Network Admin: Improve button alignment in Right Now dashboard widget.

Follow-up to [16237].

Props sabernhardt.
Fixes #61869.