TYPO3 Core

In the Page Module there is a gray dotted line (green arrows) and white spacing (orange arrows) around the whole page.

Especially in the translation view it is visually not necessary to combine the different languages inside the same box created by this line and spacing.

I would remove this line again to free up space (orange arrows) as especially horizontal space is always scarce.

Background¶

This line and spacing was introduced with TYPO3 12.4.3 in [BUGFIX] Set column width for table grids in page module
The mentioned change also added features about horizontal scrolling of the grid on small screens.

The line might have been added to make horizontal scrolling more appealing.
Or maybe it was used to overcome a technical issue by implementing a visual solution: Content-overflow caused by the white border-spacing of the column-grid while horizontal scrolling is active

.t3-grid-table {
    border-spacing: var(--pagemodule-grid-spacing);
}