How to change sub-menu font size

Hi,
I am evaluating this very nice theme form my ecommerce (with woocommerce) and I am not able to change the sub-menu font size of the "main" menu.
Could you help me? I have tried several CSS combinations of .sub-menu with no luck :(
BTW I am using the simple-custom-css plugin to put my css with no modifications to the style.

Thanks!!!
BlackKitten

Hi!
To fix this you have to insert the following code:

font-size: YOURsizepx !important;

into the code:

#header #mainmenu ul.children li a, #mainmenu .sub-menu li a {
		color:#fff !important;	
}

in the file style.css.

I`m working on the EcoTour theme. I would like to bold or increase the letters in secondary (vertical) menu. How can I do that???

Thanks
Sinisha

Hi!
To edit font properties in the main EcoTour Menu you have to edit the code:

#mainmenu li a {
		padding:11px 0;
		font-size: 15px;
		width:100%;
		text-align:center;
		color:#664a31;
		font-family:'Oswald';
		background:url(images/menu-li.png) 50% bottom no-repeat;
	}

in the file style.css.