Individualized Styling on Menu Item

For our main menu, I would like to find a way to format the border of just one menu item. I did select for the item to have a border, but when I do so it essentially just has a gray background. All in all, I would like for our ‘Join E-Club’ menu item to have a border color of #2fad3e without this border being applied to other menu items.

Is there a way I can do this within the Enfold theme?

Also, off on a bit of a tangent but is there a way to make sure that the current logo above the menu, which looks good on desktop, can be manually resized on mobile devices?

Thanks in advance!