Logo wont move with CSS

Hi there again folks.

My logo won’t budge when I try to place it at the top of my header, it is simply half on / half off the header image and wont shift.

I am using Firebug to locate the div, to which it is aptly named “logo”.

Thing is, I have tried doing everything with this div and it is like it doesn’t exist? Even putting a `.logo {
border: 1px solid red;
}does nothing (this is what I do to identify the correct div).

So, really, could someone help me find the correct div? I am rather new to CSS and could do with the help.

Thanks.

[Please do not create duplicate threads – http://wordpress.org/support/topic/how-to-position-logo-at-the-top-using-css?replies=2 ]