Header Photo Different On Homepage

Hi, my header looked great until I downloaded Yoast, which has been good for other things but really messes with my pics. As soon as I figured out how to stop them from downloading their own image instead of my photo, my photo somehow changed positioning on my homepage. It looks normal on my other pages (you can see the water and not just the palms) but I don't know how to create that on my homepage. www.lovewithouttraffic.com