Make theme Navigation Edits not reflecting

Hi,

I first did my wordpress on mamp, but i exported and imported it into the live site, cpy and pasted the theme editor (style css) into the new wordpress account!

Everything is reflecting perfectly except for some nitty gritty stuff, like the width of my image banners, height of my navigation bars, font family of certain plugin type…

Here is one of the codes for my navigation (menu) bar, it is too high and i keyed the below codes in order to lower it, but it is not reflecting at all…
In the local site, these codes worked perfectly….

/*---------------------------------------------------------
 Navigation (_scaffolding.scss)
-------------------------------------------------------- */
.site-navigation {
	margin-bottom: 0;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none; 

Margin-top: 100px;
Margin-right: 90px;
padding: 0px;
}

Is there something wrong??
Thanksss