Extending background colour to the edges in MS Word

I am trying to colour the background of just a part of a page from edge to edge. MS Word has a feature for colouring the entire background of the document via the "Design" menu, but I only want a specific part of the page coloured.

By adding a shadow/background colour to the lines, the margins are still white:

Adjusting the pins in the top ruler-bar doesn't work since the text will follow along:

I want the text to stay where it is an obey the margins that are already set. But I want the background colour to extend all the way to the edge left and right. I have not been able to google my way to a solution. How can this be done?

I use Microsoft Word 360.

Solution 1:

You could move the left and right paragraph INDENT to the edges. That would make typing harder, though.

You could try putting a shaded textbox behind your text. Anchor the textbox to the paragraph.

Here is a temporary link to the document used for this screenshot.