That’s reduced the height of the nav bar massively.
Now the only thing is I need to align it in the middle, tried adding some CSS (vertical-align: middle) but my CSS is well, not good so it hasn’t worked.
You should edit the image itself and that would fix it. Just remove the space from the top of the image using Photoshop or whatever program you’re using. Make it to where the image starts at the very top.