Bug Description

• On desktop, when the window occupies the whole screen, there is actually a big white gap in the SiwG module (edit screen):

  

• Now notice that when I decreased the length of the window (resized it horizontally), the white gap is vanished as per attached image. I have attached a video as well (view as from 28 seconds).

  

  Screen.Recording.2025-08-14.at.21.03.52.mov

• It doesn't make sense why the gap is there on full screen. To me, it's best if we remove it. It will be visually better IMO.

Steps to reproduce

1. Set up SK with SiwG
2. Go to Settings > SiwG module > Edit screen
3. Resize the window horizontally (full screen vs smaller desktop breakpoint)
4. Notice the gap on full screen mode but not on a reduced desktop breakpoint.

Do not alter or remove anything below. The following sections will be managed by moderators only.

Acceptance criteria

• The gap between the Sign in with Google client ID and the button styling options should not be so excessive on larger viewports; it should look like this:

Implementation Brief

• Remove the CSS at

  site-kit-wp/assets/sass/components/sign-in-with-google/_googlesitekit-sign-in-with-google-settings-module.scss

  Lines 97 to 101 in a36928e

  	.mdc-layout-grid {
  	.mdc-layout-grid__inner {
  	margin-bottom: $grid-gap-desktop;
  	}
  	}

  , or make sure it isn't in use on larger viewports if it's needed on smaller viewports.

Test Coverage

• No new tests needed.

QA Brief

• Test the SiwG Settings screen on all view ports.
• Verify the spacing is improved on large viewports below the Client ID field.
• Verify spacing is reduced between the One Tap and Show for comments toggles.

Changelog entry

• Amend styles for Sign in with Google settings editing screen.