Removing border below site logo

It’s here — the bottom border:

#header {
    border-bottom: 2px solid #000000;
    min-height: 100px;
    padding-top: 60px;
    position: relative;
    z-index: 1000;
}

But that seems to be in two lines 369 and 133 in your CSS.

there are two lines, this one is solid black. I am talking about the one which is just below the site logo. the grey one!

Oops, sorry…how bout this one — line 153

.main-nav {
    border-top: 1px solid #CCCCCC;
....

Main nav section contains following code. Nowhere is border-top!

.main-nav {
	margin: 5px auto 5px;
	padding: 10px 0 0;
	z-index: 100;
	width: 84%;
	text-align: left;
}

Are you using Firebug or another Browser Inspector Tool?

This is from line 153:

.main-nav {
    border-top: 1px solid #CCCCCC;
    margin: 20px auto 5px;
    padding: 10px 0 0;
    text-align: left;
    width: 84%;
    z-index: 100;
}

Your theme isn’t supported here, as stated in your previous thread
https://www.ads-software.com/support/topic/re-position-blockquotes?replies=4

I cant see the border-top: 1px solid #CCCCCC; code anywhere in the CSS.. It was eariler but i deleted it. it worked on local host but not on http

It looks like you have WP total cache enabled which makes it very hard to know what is actually happening when you are making changes. So try deactivating that and clearing any stored caches.

Also, you should be aware that making changes in theme files is never a good idea – they will all be overwritten when the theme is updated. Using a child theme is a better approach.

As Andrew mentioned, for further help, consider asking on themify forums.