Hello There,
Thanks for writing in! To fully understand how background images works, please check out this topic: https://community.theme.co/forums/topic/section-background-image-2/#post-691126
If you want to position the background image to show the top most part of the images, you can make use of this code:
#x-section-6 {
background-position: top center !important;
}
This will not look good when applied to a section with parallax effect.
Hope this helps. Please let us know how it goes.