public function header_css() {

		$color = get_header_textcolor();
		$css   = $this->get_color_css( 'header_textcolor' );

		if ( 'blank' === $color ) {

			$css = array(
				'.site-title, .site-description' => array(
					'position' => 'absolute',
					'clip'     => 'rect(1px, 1px, 1px, 1px)',
				),
			);

		}

		if ( $color && $css ) {

			printf(
				"<style type='text/css'>\n%s\n</style>",
				sprintf( Rock_Customizer::parse_css_rules( $css ), $color )
			);

		}

	}