functions.php

<?php # telling wordpress to load css file
    function university_files(){
        wp_enqueue_style('university_main_styles', get_stylesheet_uri());
        // nickname to style.css, location that point toward the file

        wp_enqueue_style('custom-google-fonts', '//fonts.googleapis.com/css?family=Roboto+Condensed:300,300i,400,400i,700,700i|Roboto:100,300,400,400i,700,700i');
        wp_enqueue_style('font-awesome', '//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css');
        
        wp_enqueue_script('googleMap', '//maps.googleapis.com/maps/api/js?key=yourkeygoeshere', NULL, '1.0', true);
      
        wp_enqueue_script('main-university-js', get_theme_file_uri('/build/index.js'), array('jquery'), '1.0', true);
        wp_enqueue_style('our-main-styles-vendor', get_theme_file_uri('/build/index.css'));
        wp_enqueue_style('our-main-styles', get_theme_file_uri('/build/style-index.css'));
      
        wp_localize_script('main-university-js', 'universityData', array(
          'root_url' => get_site_url(),
          'nonce' => wp_create_nonce('wp_rest')
        ));
    }
    add_action('wp_enqueue_scripts', 'university_files');
    //at which moment to call, the name of the function the wordpress has to call
    //at specific moment

    function university_features(){
        add_theme_support('title-tag');
    }
    add_action('after_setup_theme', 'university_features');
?>