Banner Issues.

Arrrggg.

I need some help.

First of all, here's the code.

/* your logo and position */
background-image: url(../../img/Samuiblack/logo.gif);
background-repeat: no-repeat;
background-position: left; /* you set your logo position here */
display: block;
height: 105px; 
width: 900px;/* logo height in here add width: size px if u need*/
}

Second of all, here's the picture...

I want to make it so the banner fills the whole white space, but It won't even go, as you can tell. I've tried numerous background positions, and tryed to fix the width and it just won't work.

Really need help.

Thanks.