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// Set content width value based on the theme's design
if ( ! isset( $content_width ) )
	$content_width = 800;

// Register Theme Features
function custom_theme_features()  {

	// Add theme support for Custom Background
	$background_args = array(
		'default-color'          => 'ffffff',
		'default-image'          => '',
		'default-repeat'         => '',
		'default-position-x'     => '',
		'wp-head-callback'       => '',
		'admin-head-callback'    => '',
		'admin-preview-callback' => '',
	);
	add_theme_support( 'custom-background', $background_args );

	// Add theme support for Custom Header
	$header_args = array(
		'default-image'          => '',
		'width'                  => 200,
		'height'                 => 100,
		'flex-width'             => false,
		'flex-height'            => false,
		'uploads'                => true,
		'random-default'         => false,
		'header-text'            => false,
		'default-text-color'     => '',
		'wp-head-callback'       => '',
		'admin-head-callback'    => '',
		'admin-preview-callback' => '',
	);
	add_theme_support( 'custom-header', $header_args );

	// Add theme support for HTML5 Semantic Markup
	add_theme_support( 'html5', array( 'search-form' ) );

	// Add theme support for custom CSS in the TinyMCE visual editor
	add_editor_style();
}

// Hook into the 'after_setup_theme' action
add_action( 'after_setup_theme', 'custom_theme_features' );