well – i can see images on your site! even all light-box Images

Never – a capital of ß does not exist in german Language! You can use SZ :lol

Duden Regel 160:

Regel 160:
2. Auch bei Verwendung von Großbuchstaben steht SS für ß <§ 25 E3>.

STRASSE, AUSSEN, FUSSBALL

zusatz:

In Dokumenten kann bei Namen aus Gründen der Eindeutigkeit auch bei Großbuchstaben das ß verwendet werden.

Für den im internationalen Standard-Zeichensatz „Unicode” (ISO/IEC 10646) verzeichneten Großbuchstaben für das ß gibt es derzeit noch keine allgemein verwendete Schriftform. Er ist nicht Gegenstand der amtlichen Rechtschreibregelung.

zB.: HEINZ GROßE

du kannst das ß wahrscheinlich durch ß erzwingen

• This reply was modified 9 years, 8 months ago by Guenni007.

try to add on your child-theme functions.php:

function gallery_title_fix(){
?>
<script>
(function($){
    $(window).load(function() {
      $('.lightbox-added img').each(function(){
            var lin = $(this).attr('alt');
            $(this).attr('title',lin);
        });
    });
})(jQuery);
</script>
<?php
}
add_action('wp_footer', 'gallery_title_fix');

this will show instead of the title the description of the media set on Media – i guess you will find similar things for alt Attribut

yes this was made due to the background transparency of the header on scrolling – but if you use a full color than it is obsolete!
on white case there was before a 0.8 opacity of header and a full white under ul – this looks awfull.
but with your brown this is not important.

just for you to learn :lol
this

.av_alternate_logo_active #avia-menu {
    background: rgba(0, 0, 0, 0) none repeat scroll 0 0 !important;
}

does not overwrite the rule :

#header_main #avia-menu {
    background: #fff !important
}

but this does !

.av_alternate_logo_active #header_main #avia-menu {
    background: rgba(0, 0, 0, 0) none repeat scroll 0 0 !important;
}

because it is more specific ( it is a special case of the other)
;)

these settings above were for your first choosen normal (88px) hight – for the small nav you need this instead

.html_header_top .av_bottom_nav_header .main_menu ul:first-child > li a {
    height: 35px;
    line-height: 35px;
}

hm i wait until you are ready with your decision of the hight: a few minutes ago there was a hight of 88px now it is small.

because all values depends on that decision

sorry – see my edit – try instead:
and get rid of that 100% rule mentioned above before edit.

nav.main_menu {
    background: transparent none repeat scroll 0 0 !important;
}

#header_main #avia-menu {
    background: #fff !important;
    border-radius: 20px;
    padding: 0 20px;
}

.av_alternate_logo_active #avia-menu {
    background: rgba(0, 0, 0, 0) none repeat scroll 0 0 !important;
}

this removes the container background – but when scrolled down the behaviour is as usual

• This reply was modified 9 years, 8 months ago by Guenni007.

on Enfold Options goto header – transparency options
there you can upload the logo for transparent case and set the font-color for menu.
But if you have dark and light images on that slider it is hard to choose the right color.
Maybe than it is better to choose the glassy header in that case
or the header only appears on scrolling down!

• This reply was modified 9 years, 8 months ago by Guenni007.

no subfolder install because url leads to nowhere

for 50px heading and 30px subheader he only had to play with that container height and padding

hm – if you only want the heading to get a background color you have to do a little trick – because the container of the h1 (or heading) has 100% width of the surrounding container.

go to your heading and put the heading text in <span>Wat krijg je?</span>
so you can make some specific css for that:

f.e.:

.av-special-heading-tag {
    height: 100px;
    position: relative;
    top: 40px;
}

.av-special-heading-tag span {
    background: rgba(0, 220, 152, 0.8) none repeat scroll 0 0;
    border-radius: 15px;
    padding: 10px 20px;
}

you can see the result here:
http://webers-testseite.de/enf02/wat-krijg-je/

if you only want it for that page you has to know the page-id:

.page-id-2019  .av-special-heading-tag {
    height: 100px;
    position: relative;
    top: 40px;
}

.page-id-2019 .av-special-heading-tag span {
    background: rgba(0, 220, 152, 0.8) none repeat scroll 0 0;
    border-radius: 15px;
    padding: 10px 20px;
}

• This reply was modified 9 years, 8 months ago by Guenni007.

if you like to use the normal site title and site description :

add_filter('avf_logo_subtext', 'kriesi_logo_addition');
function kriesi_logo_addition($sub) {
	$sub .= get_bloginfo( 'name', 'display' );
	$sub .= "<br><i>";
	$sub .= get_bloginfo( 'description', 'display' );
        $sub .= "</i>";
	return $sub;
}

the <i> option is to have the possibility to style site-name and description in different manners

e.g:

.logo .subtext {
    font-size: 28px;
    position: relative;
    top: 30px;
}

.logo i {
    font-size: 14px;
}

.logo > a {
    text-decoration: none;
}

.logo a {
line-height: 20px;
}

.responsive #top .logo {
    display: block;
    height: 120px !important
}

.responsive .logo a {
    display: block
}

• This reply was modified 9 years, 8 months ago by Guenni007.

sorry – without seeing your page i can not help here furthermore.
if you like to post the link only in a private manner than you have to wait for help from Moderators.

is it a responsive fullwidth slider?
there are some css – settings from enfold css missing!

e.g on fullscreen responsive layer-slider the container is a content-box not a border-box:

.ls-wp-fullwidth-container, .ls-wp-fullwidth-helper, .ls-container, .ls-container * {
    box-sizing: content-box !important;
}

etc. pp

how do you upgrade to 4.2.4 via WordPress or manually

• This reply was modified 9 years, 8 months ago by Guenni007.

so what to do best is style your site first completely in one language and than transfer this “danish”-Settingsfile to your computer
change the language – and import the danish-settingsfile to the german options etc.