CSS bug, forms loading un-styled

Because the css is added to the footer and not the header, there’s a split second where the form shows up unstyled. In order to fix this, i’ve added the following to the theme’s functions.php

// Preload Ninja Forms
if (function_exists( 'ninja_forms_display_css' ) ) :
function load_ninjaformscss_header() {
    wp_register_style( 'ninja-forms-display', NINJA_FORMS_URL .'css/ninja-forms-display.css?nf_ver=' . NF_PLUGIN_VERSION );
    wp_enqueue_style( 'ninja-forms-display' );
}
add_action('wp_enqueue_scripts', 'load_ninjaformscss_header');
endif;

https://www.ads-software.com/plugins/ninja-forms/