Image Alignment problem

I am making a website where there are two pics in the banner, one is the logo, and one is decoration. the decoration pic has CSS code telling it to move to the right, i.e:

#branchpic {
height: (whatever it is)
width: (whatever it is)
margin:(whatever it is)
left: 175px;

And this works just fine when I want to move something over to the left… But my problem lies in that I want to align my “branchpic” to the left. The code worked as a quick fix in Opera, but when I looked at the site in Camino or Safari it didn’t go all the way to the left. Is there a way I can just align the image to the left? (and I have already tried: align: left;)