Zero Gravity Theme

Hello,

I am a very beginner using WordPress. I am trying to figure out how to edit the code to change the header size to be the full screen width. I tried to go in and change the height and width, but that still kept the image centered?? THANKS!

Here is the current theme code.

<?php
/**
* Implement an optional custom header for ZeroGravity
*
* See https://codex.www.ads-software.com/Custom_Headers
*
* @since ZeroGravity 1.0
*/

/**
* Set up the WordPress core custom header arguments and settings.
*
* @uses add_theme_support() to register support for 3.4 and up.
* @uses zerogravity_header_style() to style front-end.
* @uses zerogravity_admin_header_style() to style wp-admin form.
* @uses zerogravity_admin_header_image() to add custom markup to wp-admin form.
*
* @since ZeroGravity 1.0
*/
function zerogravity_custom_header_setup() {
$args = array(
// Text color and image (empty to use none).
‘default-text-color’ => ‘515151’,
‘default-image’ => ”,

// Set height and width, with a maximum value for the width.
‘height’ => 768,
‘width’ => 2000,
‘max-width’ => 2000,

// Support flexible height and width.
‘flex-height’ => true,
‘flex-width’ => true,

// Random image rotation off by default.
‘random-default’ => false,

// Callbacks for styling the header and the admin preview.
‘wp-head-callback’ => ‘zerogravity_header_style’,
‘admin-head-callback’ => ‘zerogravity_admin_header_style’,
‘admin-preview-callback’ => ‘zerogravity_admin_header_image’,
);

add_theme_support( ‘custom-header’, $args );
}
add_action( ‘after_setup_theme’, ‘zerogravity_custom_header_setup’ );

/**
* Load our special font CSS file.
*
* @since ZeroGravity 1.0
*/
function zerogravity_custom_header_fonts() {
$font_url = zerogravity_get_font_url();
if ( ! empty( $font_url ) )
wp_enqueue_style( ‘zerogravity-fonts’, esc_url_raw( $font_url ), array(), null );
}
add_action( ‘admin_print_styles-appearance_page_custom-header’, ‘zerogravity_custom_header_fonts’ );

/**
* Style the header text displayed on the blog.
*
* get_header_textcolor() options: 515151 is default, hide text (returns ‘blank’), or any hex value.
*
* @since ZeroGravity 1.0
*/
function zerogravity_header_style() {
$text_color = get_header_textcolor();

// If no custom options for text are set, let’s bail
if ( $text_color == get_theme_support( ‘custom-header’, ‘default-text-color’ ) )
return;

// If we get this far, we have custom styles.
?>
<style type=”text/css” id=”zerogravity-header-css”>
<?php
// Has the text been hidden?
if ( ! display_header_text() ) :
?>
.site-title,
.site-description {
position: absolute;
clip: rect(1px 1px 1px 1px); /* IE7 */
clip: rect(1px, 1px, 1px, 1px);
}
<?php
// If the user has set a custom color for the text, use that.
else :
?>
.site-header h1 a,
.site-header h2 {
color: #<?php echo $text_color; ?>;
}
<?php endif; ?>
</style>
<?php
}

/**
* Style the header image displayed on the Appearance > Header admin panel.
*
* @since ZeroGravity 1.0
*/
function zerogravity_admin_header_style() {
?>
<style type=”text/css” id=”zerogravity-admin-header-css”>
.appearance_page_custom-header #headimg {
border: none;
font-family: “Open Sans”, Helvetica, Arial, sans-serif;
}
#headimg h1,
#headimg h2 {
line-height: 1.84615;
margin: 0;
padding: 0;
}
#headimg h1 {
font-size: 26px;
}
#headimg h1 a {
color: #515151;
text-decoration: none;
}
#headimg h1 a:hover {
color: #21759b !important; /* Has to override custom inline style. */
}
#headimg h2 {
color: #757575;
font-size: 13px;
margin-bottom: 24px;
}
#headimg img {
max-width: <?php echo get_theme_support( ‘custom-header’, ‘max-width’ ); ?>px;
}
</style>
<?php
}

/**
* Output markup to be displayed on the Appearance > Header admin panel.
*
* This callback overrides the default markup displayed there.
*
* @since ZeroGravity 1.0
*/
function zerogravity_admin_header_image() {
?>
<div id=”headimg”>
<?php
if ( ! display_header_text() )
$style = ‘ style=”display:none;”‘;
else
$style = ‘ style=”color:#’ . get_header_textcolor() . ‘;”‘;
?>
<h1 class=”displaying-header-text”> onclick=”return false;” href=”<?php echo esc_url( home_url( ‘/’ ) ); ?>” tabindex=”-1″><?php bloginfo( ‘name’ ); ?></h1>
<h2 id=”desc” class=”displaying-header-text”<?php echo $style; ?>><?php bloginfo( ‘description’ ); ?></h2>
<?php $header_image = get_header_image();
if ( ! empty( $header_image ) ) : ?>
<img src=”<?php echo esc_url( $header_image ); ?>” class=”header-image” width=”<?php echo get_custom_header()->width; ?>” height=”<?php echo get_custom_header()->height; ?>” alt=”” />
<?php endif; ?>
</div>
<?php }