Site Broken after adding one line and deleting it in Functions.php

I was informed I could create a header.php file in my child theme by adding a line of code to the functions.php. It indeed worked but my entire site is broken now.

I switched back to the parent theme and fixed the site but now my child theme is no longer usable.

Here is the fuctions.php of the child.

<?php

function focuson_ninzio_child_scripts() {
wp_enqueue_style( ‘focuson_ninzio-parent-style’, get_template_directory_uri(). ‘/style.css’ );
}
add_action( ‘wp_enqueue_scripts’, ‘focuson_ninzio_child_scripts’ );

?>

Any suggestions on how to get the child to work again. I have disabled and enabled all plugins in troubleshooting mode and nothing worked. Thanks guys!