Header Menu Issues ( Shopify Dawn Theme )

[dreamtechzone_5]

Hello Everyone!

I am using the Shopify Craft Theme. How can I add a line to the header menu? I want to keep it exactly like the image below. I want to add a line after the contact us. Please help me. Thank you in advance.

https://blue-chic-clothes.myshopify.com
Password: Admin

I have used this code before. But the line is not showing after contact us.

a#HeaderMenu-home, .list-menu__item:not(:last-child) {
border-right: 1px solid black;
}

What I want:

[Burte · Accepted solution]

You can add below code in css. 

.list-menu__item {

   border-right: 1px solid black;

}

[dreamtechzone_5]

Thank you so much. It worked. But want to remove these lines.