Adjusting Size of Image Banner

I like the image banner that shows up on the website, however, it takes up the full resolution of the page on load.

Is there a way I can edit this? I have removed the image for now and am just embedding a different image via HTML, but it does not expand the width of the page.

Can someone point me in the right direction?

I just want to have an image loaded that will expand full width, but not height.


See Customize > Header Image. You can set your height there.