It looks like your code got eaten by the forum parser here. You should always use back-ticks to surround code blocks and stop that from happening. The ‘code’ button above the editor here will do the saem thing. ??
Looking at what I can see of your example, to target it using CSS is pretty easy really, if I’m reading it correctly.
ul ul.sub-menu ul.sub-menu {
/* Styles go in here. */
}
]]>