How to Change The Huge Header Spacing?

Hi there,

I recently installed WordPress on my website and I am using a theme called, “Justwrite”, which has a slick design. However, I dislike the huge spacing I have on the top section of my website, where you can see the image of a woman vaping. For better understanding here’s my website.

My question is, “Is there any way I can reduce the spacing?” I am guessing I need to edit the coding. Does anyone have some advice of how I can do this? Thanks

– Jordan