Format padding in Header

Hello,

I am trying to format the header trying to add some padding to the left side of the image in the header.

The code is as follows.

index page:
<div id=”header”></div>

css:
#header {
background:#5308A8;
border-bottom-color:#000;
color:#222;
height:125px;
background-image: url(‘images/tencar-logo.gif’);
background-repeat: no-repeat;
}

I’ve tried padding-left, margin-left, and other varitions but nothing seems to work.

Thanks!