Epik styled buttons as menu items

I would like to be able to use a couple of Epik styled buttons in the main menu for sign-up and login as I want them to appear prominently, like a call to action.

I thought if I switch on CSS Classes in the WordPress Custom Menu System, I would simply be able use an Epik button class to style specific entries, but the first thing I found is that WordPress removes the periods in the classes name so “a.button.red” for example becomes “abuttonred”.

So do I need to create my own custom class(es) and add additional CSS like this, or is there some other way?

/* Target the menu item LI */
.menu li.myClass{
  /* Margin might go here */
}
/* Target the menu item Anchor (link) */
.menu li.myClass > a{
  /* Colors, font sizes, would normally go here */
}

Terence.