Changing image header size + aligning it more to the left

Hi there, I'm using Catch Responsive and I have a few requests for CSS codes! The website is http://www.huronresearch.ca/hbow/. -The Catch Responsive theme is making my logo larger than the actual image. I would like to use CSS to select a custom image height and width or to force the theme to use the true height and width of the image. -The logo image begins slightly to the right of where the menu and slider begin. I would like to align the logo image flush left or flush right with the menu/slider. In other words, I would like to remove the white space before the logo image. (There is no white space before the text in the image itself, and "Check to move title and tag before logo" is UNchecked.) You'll notice that there are a bunch of attempts of css to do these things that didn't work in the site source code... Those are there to help me keep track of what's not working. Sorry :) Thanks so much!