Sam - Unsheathed

Can anyone help me? I’m still having this problem.

This is the header code for the theme:

<!-- BEGIN #header -->
<div id="header">

	<?php $header_image = get_header_image(); if ( ! empty( $header_image ) ) { ?>

		<div id="custom-header" <?php if ( has_nav_menu( 'fixed-menu' ) ) { ?>class="fixed-menu"<?php } ?> style="background-image: url(<?php header_image(); ?>);" data-type="background" data-speed="10">

			<?php get_template_part( 'content/logo', 'title' ); ?>

			<img class="hide-img" src="<?php header_image(); ?>" height="<?php echo get_custom_header()->height; ?>" width="<?php echo get_custom_header()->width; ?>" alt="<?php echo esc_attr( get_bloginfo() ); ?>" />

		</div>

	<?php } else { ?>

		<div id="custom-header" class="non-active<?php if ( has_nav_menu( 'fixed-menu' ) ) { ?> fixed-menu<?php } ?>">

			<?php get_template_part( 'content/logo', 'title' ); ?>

		</div>

	<?php } ?>

<!-- END #header -->

How do I remove the background-attachment: fixed; part?

Basically. What I want is for the header image to remain stationary and not scroll at all while I go down the page.