Suggestion: 'Insert horizontal line' option

Hi. I like to break up some of my pages with horizontal lines. I’m currently using __________ to do this which is fine until you display the page differently, such as on a phone, or zoom or change orientation, then that line is suddenly taking up two or three lines which is messy. Some apps (such as Notebooks) have the ability to add a horizontal line anywhere on the page which is only ever one line, however you change the page. Would like to see this in Scrivener for iOS.

Many thanks.