Problem with Primary Navigation alignment in Alyeska theme

Hi dears,
I’m using Alyeska theme in my rtl language website, when i chose a customized links as Primary Navigation and Footer Navigation menus in Menus option under Appearance section in WP admin panel, in my website both of them show with left alignment.
after it, i looked for css elements to solve this problem, i find elements of footer navigation alignment in rtl.css file such this:

#footer_sub_content .copyright .menu {
	float: left;
}
#footer_sub_content .copyright .menu li {
	float: left;
}

i just edit float elements to negative values, right value change to left, after these changes footer navigation menu is correct, but i can’t find elements of primary navigation in this file or other css files to set right alignment to it.