Need header image behind social media icons

Hi! Just purchased Catch Box Pro yesterday for http://www.allatoonahs.com/. I created a custom header image (http://www.allatoonahs.com/wp-content/uploads/2017/07/Allatoona-High-School.png), but I cannot get the header image to stay behind the social media icons on the right of the header. I've tried several different options from your forum. Can you help please? Thanks!