Image top of column

I am using a child theme. I would like to insert an image at the top of the main column on my homepage. In my sidebar I was able to accomplish this using a widget, but that won’t work for the main column. I would like the two columns to match. I can’t put the image above the column, because when the window is resized, the content moves while the image stays static. So, it needs to be at the top of the column specifically. Here is a link to my website
https://thefreecollective.org

Thanks.