hellofromtonya/functions.php

## functions.php
//* Add support for custom header
add_theme_support( 'custom-header', array(
	'width'           => 1000, // width of the image
	'height'          => 70, // height of the image
	'header-selector' => '.site-header', // sets it to the <header> element
	'wp-head-callback' => 'lunarwp_modify_custom_header',	// callback so we can modify the css added to the <head>
	'header-text'     => false,
) );

/**
 * Modify the custom header.  We are using the standard Genesis code here from
 * function function genesis_custom_header_style() in header.php; however, we
 * modified the actual css output to allow us to "contain" the image for mobile
 * devices.
 *
 * @since  1.0.0
 *
 * @return void
 */
function lunarwp_modify_custom_header()
{
	$output = '';

	$header_image = get_header_image();
	$text_color   = get_header_textcolor();

	//* If no options set, don't waste the output. Do nothing.
	if ( empty( $header_image ) && ! display_header_text() && $text_color === get_theme_support( 'custom-header', 'default-text-color' ) )
		return;

	$header_selector = get_theme_support( 'custom-header', 'header-selector' );
	$title_selector  = genesis_html5() ? '.custom-header .site-title'       : '.custom-header #title';
	$desc_selector   = genesis_html5() ? '.custom-header .site-description' : '.custom-header #description';

	//* Header selector fallback
	if ( ! $header_selector )
		$header_selector = genesis_html5() ? '.custom-header .site-header' : '.custom-header #header';

	//* Header image CSS, if exists
	if ( $header_image )
		$output .= sprintf( '%s { background-image: url(%s) !important; background-repeat: no-repeat; background-size: contain; }', $header_selector, esc_url( $header_image ) );

	//* Header text color CSS, if showing text
	if ( display_header_text() && $text_color !== get_theme_support( 'custom-header', 'default-text-color' ) )
		$output .= sprintf( '%2$s a, %2$s a:hover, %3$s { color: #%1$s !important; }', esc_html( $text_color ), esc_html( $title_selector ), esc_html( $desc_selector ) );

	if ( $output )
		printf( '<style type="text/css">%s</style>' . "\n", $output );
}
	//* Add support for custom header
	add_theme_support( 'custom-header', array(
	'width' => 1000, // width of the image
	'height' => 70, // height of the image
	'header-selector' => '.site-header', // sets it to the <header> element
	'wp-head-callback' => 'lunarwp_modify_custom_header', // callback so we can modify the css added to the <head>
	'header-text' => false,
	) );

	/**
	* Modify the custom header. We are using the standard Genesis code here from
	* function function genesis_custom_header_style() in header.php; however, we
	* modified the actual css output to allow us to "contain" the image for mobile
	* devices.
	*
	* @since 1.0.0
	*
	* @return void
	*/
	function lunarwp_modify_custom_header()
	{
	$output = '';

	$header_image = get_header_image();
	$text_color = get_header_textcolor();

	//* If no options set, don't waste the output. Do nothing.
	if ( empty( $header_image ) && ! display_header_text() && $text_color === get_theme_support( 'custom-header', 'default-text-color' ) )
	return;

	$header_selector = get_theme_support( 'custom-header', 'header-selector' );
	$title_selector = genesis_html5() ? '.custom-header .site-title' : '.custom-header #title';
	$desc_selector = genesis_html5() ? '.custom-header .site-description' : '.custom-header #description';

	//* Header selector fallback
	if ( ! $header_selector )
	$header_selector = genesis_html5() ? '.custom-header .site-header' : '.custom-header #header';

	//* Header image CSS, if exists
	if ( $header_image )
	$output .= sprintf( '%s { background-image: url(%s) !important; background-repeat: no-repeat; background-size: contain; }', $header_selector, esc_url( $header_image ) );

	//* Header text color CSS, if showing text
	if ( display_header_text() && $text_color !== get_theme_support( 'custom-header', 'default-text-color' ) )
	$output .= sprintf( '%2$s a, %2$s a:hover, %3$s { color: #%1$s !important; }', esc_html( $text_color ), esc_html( $title_selector ), esc_html( $desc_selector ) );

	if ( $output )
	printf( '<style type="text/css">%s</style>' . "\n", $output );
	}