ABooooo

In Extension Manager (EM) find the RealURL and set option Automatic configuration file format to PHP source (slow!) (with automatic conf still enabled!)
Remove the file typo3conf/realurl_autoconf.php (as far as I remember), clear all caches and refresh the main page, the autoconf file will be recreated in unserialized version.
Rename the file to typo3conf/realurl_conf.php, go to EM again and uncheck the automatic configuration option.
After clearing the caches and you'll be switched to manual config built from the automatic one.

ABooooo

1. https://docs.acquia.com/lightning/install/local/
2. https://gist.github.com/criscom/d973ea5e4328bf8aab39857ecf93b075

#Install lightning
composer create-project acquia/lightning-project MY_PROJECT --no-interaction
open with browser MY_PROJECT/docroot
install Drupal

#error execution time
https://www.drupal.org/forum/support/installing-drupal/2014-01-22/maximum-execution-time-of-30-seconds-exceeded-in-drupal

ABooooo

https://gist.github.com/Metaviolet/682c8d3b05a3a01fd598

//First declare breakpoints
$breakpoints: (
  'small':  767px,
  'medium': 992px,
  'large':  1200px
) !default;

/// Mixin to manage responsive breakpoints

ABooooo

<?php echo get_template_directory_uri(); ?>

ABooooo

https://code.tutsplus.com/tutorials/dynamically-adding-four-footer-widget-areas--cms-22168

ABooooo

// register sidebar in functions
function alle_sprachen_widgets_init() {
	register_sidebar( array(
		'name'          => esc_html__( 'Sidebar', 'alle_sprachen' ),
		'id'            => 'sidebar-1',
		'description'   => esc_html__( 'Add widgets here.', 'alle_sprachen' ),
		'before_widget' => '<section id="%1$s" class="widget %2$s">',
		'after_widget'  => '</section>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',

ABooooo

// Register Sidebar
function alle_sprachen_widgets_init() {
	
	register_sidebar( array(
        'name'          => esc_html__( 'Header-Hero', 'alle_sprachen' ),
        'id'            => 'header_hero',
        'description'   => esc_html__( 'Add widgets here.', 'alle_sprachen' ),
        'before_widget' => '<section id="%1$s" class="widget %2$s">',
        'after_widget'  => '</section>',
        'before_title'  => '<h2 class="widget-title">',

ABooooo

// get page ID with objct post
$custompageid = get_field('anfrageseite_id', 'option'); // 'options' is standard value!!!

ABooooo

//http://jsfiddle.net/RokoCB/tw6g2oeu/7/ 

(function($, win) {
          $.fn.inViewport = function(cb) {
              return this.each(function(i,el){
                  function visPx(){
                      var H = $(this).height(),
                          r = el.getBoundingClientRect(), t=r.top, b=r.bottom;
                      return cb.call(el, Math.max(0, t>0? H-t : (b<H?b:H)));
                  } visPx();

ABooooo

<?php echo get_stylesheet_directory_uri(); ?>/assets/img/favicon.ico"