[Theme: SuevaFree] extend image to full width

Hi all,

I love the look of my SuevaFree site, and in creating a child theme I have been able to make little tweaks here and there to adjust the spacing to my preference, but am having difficulty with bringing the main body of the homepage right up to the edge of the text area. If you have a quick look at the site (https://laurenware.me) you can see I have an image in the white space under the navigation bar. I would like the image to be able to be extended to the top and full-width edges of that space, or, in other words, to remove the white space at the top and sides of the image.

If possible, I would also like to learn how to simply change the width of that white space (so, not extending the image fully, but rather just reducing the white space margin on the side and top of the image).

Where might these changes have to be made in the stylesheet (or php?)?

Thanks very much!

The blog I need help with is: https://laurenware.me