Redmine

I have installed the latest Bitnami Redmine stack for VMs. The problem that I am running into is that I am unable to get my company's logo centered in the blue header bar. I used the following line to add my logo in my base.html.erb file;

<!--></h1>-->
<img src="<= Redmine::Utils.relative_url_root %>/images/logo.png" style="top-margin: 15px; left-margin: 15px;"/>

I successfully got the logo to display, but no matter what changes I do to the left-margin statement, the changes are not reflected when I restart Redmine and reload the page. I have tried using cm, increasing the px count, center, left-margin: 50% and anything else I could find on the web to no avail.

I do not have any experience with Linux, mysql, html, ect. but and learning as I go. Any help would be appreciated.

-Kyle