You need to add the folder that your css is in, so it might look like this if your styles were in ‘css’:
wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/css/style.css' );
You need to add the folder that your css is in, so it might look like this if your styles were in ‘css’:
wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/css/style.css' );