Featured Image of Post Before Header

Hi there,

I’ve been playing around with custom functions to display content before the header and trying to perhaps either use this as an image (div) or as the post background??

Example:

function after_head_image_func($content){
if(is_home())
echo ‘<div class=”header-banner”></div>’;
elseif(is_page())
echo ‘<div class=”header-banner”></div>’;
elseif(is_single())
echo ‘<div class=”header-banner”></div>’;
elseif(is_category())
echo ‘<div class=”header-banner”></div>’;
}
add_action(‘ava_after_main_container’, ‘after_head_image_func’);

My problem is that I have no idea how to incorporate the hook for the featured image on the post? I think I’ve tried everything and yet the only thing that seems to work for me is to hard code an image into this functions.php (not a solution!!)

I’m using a child theme and have this as a custom function file.

Any help would be greatly appreciated, I’m hitting my head against a wall!! :(

Kind regards,
Dan