It’s weird how I really haven’t done that much web development, but I still tend to think in CSS when working with UI. Speaking of, this is something I’ve wanted from SwiftUI.Grid ever since it came out too! Like placing a background under multiple cells in the grid, or having Grid intersect with a Button’s label to align elements outside. I think alignment guides may work, but they’re not as easy to use. https://webkit.org/blog/17339/subgrid-how-to-line-up-elements-to-your-hearts-content/
Subgrid: how to line up elements to your heart’s content

When Grid became widely available across browsers in 2017, it was an absolute game changer.

WebKit
@axiixc This would be awesome in SwiftUI. I find aligning things very difficult there still.