Dawn theme - how to add a line at the bottom of the menu drawer as show in the picture

[lslelegance]

Dawn theme - how to add a line(same colour line as the footer light silver) at the bottom of the menu drawer as show in the picture on top of the social media icons please ?

website : https://lslelegance.myshopify.com

@oscprofessional

[oscprofessional]

@lslelegance ,

nav.menu-drawer__navigation {
border-bottom: 2px solid #e9dddd;
}