auf screenweiten kleiner als 768 px ist der Hamburger Button in geöffnetem Zustand rot – daher nocht folgendes:

@media only screen and (max-width:767px) {
 .av-burger-overlay-active #top .header_color .av-hamburger-inner,
 .av-burger-overlay-active #top .header_color .av-hamburger-inner::before,
 .av-burger-overlay-active #top .header_color .av-hamburger-inner::after {
  background-color: #FFF
 }
}

und den einen selctor müssen wir auch selectiver machen:

.responsive.av-burger-overlay-active #top #wrap_all .av-logo-container a .language_flag img {
 outline:2px solid #FFF
}

on that masonry you entered : .group-1

remove the dot on that class – and look if that is the trick.

Also ich habe es in einer Testinstallation mittels WPML Menü Sprachumschalter gemacht, und dann nur css angewandt.
Eventuell hatte ich dadurch etwas andere Selectoren als Du. Lass es doch einfach jetzt so – so sieht es gut aus.

Unfortunately, this is not a matter that you can control yourself. Even if the pdf links have this download attribute, the browser settings determine what happens – you can force a download – but the pdf file will open anyway in the browser.

// with file-extension
function force_pdf_link_to_download() { 
?>
<script type="text/javascript">
window.addEventListener("DOMContentLoaded", function () { 
(function($){
      $('a[href$=".pdf"]').each(function() {
         pdfName = $(this).attr('href').match(/\/([^\/?#]+)[^\/]*$/)[1];
         $(this).attr('download', pdfName ).attr('target', '_blank'); 
      });
})(jQuery);
});   
</script>
<?php 
}
add_action('wp_footer', 'force_pdf_link_to_download');

it is not possible to add a download attribute to a link with no value – even if you try that –
texteditor will correct it to: download="" so the script above will insert download="filename.pdf"

Even an entry in the htaccess file does not have to be followed by the browser:

<FilesMatch "\.(?i:pdf)$">
ForceType application/octet-stream
Header set Content-Disposition attachment
</FilesMatch>

so what could be reached is that the file downloads on click – but it will open in browser tab too.

Perhaps a more skilled programmer than me can force this behaviour – but I think it will be futile, especially since it is supposed to be browser independent.

if you like to replace it everywhere you can try this in your child-theme functions.php:

function wrap_copyright_text_with_sup(){
?>
<script>
window.addEventListener("DOMContentLoaded", function () { 
(function($) {     
     $('body :not(script)').contents().filter(function() {
        return this.nodeType === 3;
        }).replaceWith(function() {
            return this.nodeValue.replace(/[™®©]/g, '<sup>$&</sup>');
     });
})(jQuery);
});
</script>
<?php
}
add_action('wp_footer', 'wrap_copyright_text_with_sup');

after that you can style the sup (superscript) tag:
this is default:

sup {
  top:-0.5em;
  font-size: 0.75em;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

not a custom php file – put these lines to your child-theme functions.php

on default installation of a child-theme ( Link ) there will be at the beginning :
functions.php ; screenshot.png ; style.css

on a fresh installed child-theme functions.php there are no extra entries – only a leading <?php on top.
those extra snippets comes to that file – leave the leading line untouched.

_____________

if you like to group some images on a page just give to the image that common group class ( group-1, group-2 etc. )
Images in text-blocks : put that custom class to the link ( “Link CSS Class”) : group-1 etc. – see screenshot above. (Link )

see here in action: https://webers-testseite.de/lightbox-grouping/
All squared images are in one group – and the Rest is in a different group.

PS: you can add more lines to that list – but i think 8 groups on a page will be enough.

kuck mal hier: Link
und scroll dann mal runter. Mit Inline svg ist sowas möglich

here is an example as svg – if you now decide to have shrink header – you can set the subliner to display: none – or opacity: 0

Edit: Logo Download removed

PS if this is done – i will remove your logo from here.

you see how it is set for better select the single parts:

the ID: #subliner could be handled separated from the rest, because Enfold put the svg Logo as inline svg code.

Welcher Schriftzug soll darunter stehen? Eventuell könnte man das ganze dann lieber als svg umsetzen.
Die Tänzerin zu verktorisieren geht schnell, und die Schrift ist bekannt ( Gill Sans Nova)

Diesen extra Schriftzug könnte man dann ein/ausblenden nach dem Scrollen – oder gar verschieben etc. pp:
siehe z.B: https://ars-expressiva.com/

Na wie gesagt: Manche sehen es als Sicherheitsrisiko an, php ( js ) via dashboard bearbeiten zu können.
Daher kann man es abschalten z.B. mit den zwei Zeilen die ich oben ansprach. Dazu müßtest du mal via ftp in deine wp-config.php schauen ob sich diese Einträge dort befinden.

nimm das öffentlich gepostete Login mal lieber schnell raus! Und setze es für die Mods in den Private Content unterhalb des regulären Eingabefeldes.
Am besten auch das Login Passwort noch ändern.

so ich hatte mich mal kurz eingeloggt. In der Tat hast du dort keinen Editor. Das kann daran liegen, das aus Sicherheitsgründen – entweder ein Security Plugin das verhindert, oder in der wp-config.php datei im Rootverzeichnis deiner WordPress Installation genau das unterbunden wird.
Die Zeilen wären dann:

define( 'DISALLOW_FILE_EDIT', true );
define( 'DISALLOW_FILE_MODS', true );

die entweder löschen – oder auf false setzen.

by the way you can use the html classes from enfold on columns etc. to have similar look.
f.e:

to have those placeholders inside the input fields use the placeholder attribute – like on my screenshot
[text your-name placeholder "Your name here"]

This could also be used as a snippet – but from a SEO point of view it would probably be better not to replace an existing H2, but to change the build process to H1.

function replace_tags_with_tags(){
?>
<script>
  (function($) {       
      function replaceElementTag(targetSelector, newTagString) {
        $(targetSelector).each(function(){
          var newElem = $(newTagString, {html: $(this).html()});
          $.each(this.attributes, function() {
            newElem.attr(this.name, this.value);
          });
          $(this).replaceWith(newElem);
        });
      }
      replaceElementTag('.avia-fullwidth-slider h2.avia-caption-title', '<h1></h1>'); 
  }(jQuery)); 
</script>
<?php
}
add_action('wp_footer', 'replace_tags_with_tags');

But isn’t it then a problem of that plugin ( Permalink Manager ) ? What do they say about your troubles ?
and you are right – I did indeed assume that you were using the Advanced Layout Builder. In this case there is an editor field for permalink