Make one menu to be

Hi Afreen,

Are you trying to apply something like this?
https://share.getcloudapp.com/4gunDPd1

If this is the case, there shouldn't be a need to make a menu item for the purpose of being a border.

We can simply apply border-left to the "offers" menu item like this:

li#menu-item-3810 {
    border-left: 3px solid black;
}

Yes, but I would like to be border to all 4 sides, looks to be a box border.

If it's a full boxed border, you can try this:

li#menu-item-3810 {
    border: 3px solid black;
}