Adding Image Above Category content and below header

Hello there.

This is a rather complex modification which I’m afraid, as authors, can’t provide ready made code for.

I can give you some pointers on how something like this could be implemented.

You can start by finding a plugin that allows you to add featured images to WordPress categories. Check the repo here https://ww.wp.xz.cn/plugins/tags/category-image

Once you find one you can use its documentation to help you see how you can output that image in a template.
Use that code in the index.php file, perhaps below line 8 (depending on where you want the image to appear) to echo the image.

Perhaps you could consider a conditional statement to check if a category listing is displayed https://codex.ww.wp.xz.cn/Conditional_Tags#A_Category_Page so the code runs only on category listings and not all the time.

This is interesting.

In requires, of course, coding. To be able to add banner images below your header, check out wp_head action. Like:

<?php

add_action('wp_head', 'add_header_banner');

function add_header_banner() {
echo '<img src="#" alt=""';
}

Of course, it will be more complicated than that... if you want admin interface etc.

?>

For the content, you need to add_filter on the_content here.
To give each category a different banner, you’ll use is_category here and probably switch statements and the like.

The code you found can be used in the index.php file, just below line 8 as suggested.
However I would suggest changing the
<?echo
bits to
<?php echo