White space in the header

So my blog is looking good….except for this little sliver of white space that is making me contemplate suicide.

http://kelseykronmiller.com/blog/

In the top, left hand side where the gray and blue bars are, there is a line of white. This appears when I set the background to “fixed,” which is how I need it to be.

Here is the code to that specific header (the gray and blue bars). I’ve tried altering everything I could think of — 0 margins, expanding the width, etc. Nothing.

#header {
        background: transparent;
        overflow: hidden;
        color: #797979;
	font-size: 14px Verdana, Arial, 'Helvetica', sans-serif;
        height: 150px;
	margin: 0 auto;
        text-align: left;
	padding: 0 0 0 0;

Any reason why setting the background to “Fixed” is making it do that?