Header CSS Being Overridden by Easy Header Setup (Under Apperances Tab)

Hello All,

I am having an issue with my header css. I am currently using the Jenny 1.5 Theme by Specky Geek and I am trying to manipulate the header dimensions slightly and insert the image via css directly (not with header upload tab under appearances menu). The reason I am not using the easy header upload option is because it keeps trying to crop my image even if its dimensions are correct. Anyways, I got the change to take place in the header dimensions, but I can’t seem to get it to take place with the header image. It seems that every time I upload the image to the #masthead style sheet code section, it gets overridden by, I’m guessing, the html that allows for the easy header setup option.

Can anyone help me resolve this issue?