Minimalism Header Change

1. Create an image (call it header.jpg) 800 px wide. Make a note of the image’s height (100px in the example below).

2. Upload header.jpg to your theme’s images folder via FTP.

3. Edit style.css and change:

#header {
margin:20px 0 40px;
}

to

#header {
background:url(images/header.jpg) no-repeat left top;
height:100px;
margin:20px 0 40px;
}

replacing 100px with the height of your image.

Thank you esmi, I did as you said which worked, but I just need to get rid of the text that was present before, could you direct me through this?
Thanks!
Nathan

here is what it looks like now: https://nathanperkel.com/news/

Add:

#headerimg h1,#headerimg .description {
position:absolute;
top:-5000px;
left:-5000px;
}

to the bottom of style.css.

Aha! Thanks again..
Two more questions:
1 how can i add a link to the header.jpg,
2 and also bring it down half an inch or so so it is closer to the postings?
N