How do I link the side images?

[Nauman_Tanwir]

This is my site: http://classichits.ie/

I want to link the image on the sides to another link.

This is the code:

<style>
	body.boxed-layout{
background-image:url(<?php echo get_site_url(); ?>/wp-content/uploads/2016/01/bg4-1.jpg) !important;
background-size:cover !important;
background-repeat:no-repeat !important;
background-position:center center;
}