line under widget-name

Please link your website or else it is impossible to help you.

sry, I’m working offline on a localhost

Ok. Well I don’t really understand what you mean, but the only way of adding some kind of line underneath other then underline, would be to apply a border style, border color, and border widht only to the bottom of the element. So like this: https://htmldog.com/reference/cssproperties/border/

Thank you.
But my problem is not to set the line, just can’t place it right.I would like to bring it between the title of the widget and the widget itself.

This brings a line at the top or bottom of each widget:
.widget { border-top: 1px solid #e7e8e9; }
But what would be the right code for each widget name?

figured it out! But thanks a lot for your help!!