Add utf 8 alt and hex or decimal characters to menu

As the title says, I want to add utf 8 characters to menu, specifically down arrow as in the attachment ?
Thanks again.

Hi
you can what you want with CSS , else you can use the styling interface to define your open/close icons
CEd

Ok I tried adding an icon using the styling interface, accordion icons specifically, but that only puts the icon to the far right of the menu, with a limited x and y setting and couldn't get them to move past that specific spot at the far right. I need them right next to the text as in the attachment.
I would use css, please forgive me for my ignorance, but don't have a clue how to, I know there's a custom css, but if I knew how to do that I wouldn't need MobileMenuCK to get my menu working.
Again thank you, any help with this would be greatly appreciated.

do you have an url where I can check the menu ?

Thank you it is cco.oakdalecalvary.org.

you can play with the css using .open => icon when it is opened
you can set the font family, content and what you want to put your own icon, you can remove the background image that is currently set