Sights separator lines

Marcin P
Marcin P
edited 12/09/19 in Smartsheet Basics

Hi All!

Could someone tell me how to add kind of separator line like this one? It is sight from smartsheet's template.

It is fully interactive, so if I want make it wider, it is enough to drag the corner of this field. I tried to add a picture of a line from an icon, but it does not expand its width.