i guess there was something with that filter : avf_hide_transparency_logo_meta

For Now:
i used the id’s from above to insert on that enfold options some input fields to manual insert alt and title attribute :
This comes to child-theme functions.php:

function my_transparent_logo_attributes( array $avia_elements = array() )
{
  $slug = "header";
  $id = 'header_replacement_logo';
  
  $new_element_1 =  array(
      "slug"  => "header",
      "name"  => __( "Alt for the Transparency Logo", 'avia_framework' ),
      "desc"  => __("Put in your Alt Attribute for Transparency Logo", 'avia_framework'),
      "id"    => "header_replacement_logo_alt",
      "type"  => "text",
      "std"   => "" );

  $new_element_2 =  array(
      "slug"  => "header",
      "name"  => __( "Title for the Transparency Logo", 'avia_framework' ),
      "desc"  => __("Put in your Title Attribute for Transparency Logo", 'avia_framework'),
      "id"    => "header_replacement_logo_title",
      "type"  => "text",
      "std"   => "" );
  
  $found = false;
  $index = 0;
  

  foreach( $avia_elements as $key => $element ){ 
  	$index++; if( isset( $element['id'] ) &&  ( $element['id'] == $id ) && isset( $element['slug'] ) && ( $element['slug'] == $slug ) ) { $found = true; break;}
    } 
     if( ! $found ) { 
        $avia_elements[] =  $new_element_1 ; 
	$avia_elements[] =  $new_element_2 ;
     }
     else {
        $avia_elements = array_merge( array_slice( $avia_elements, 0, $index ), array( $new_element_1, $new_element_2 ), array_slice( $avia_elements, $index  ) );
     }
  return $avia_elements;
}
add_filter( 'avf_option_page_data_init', 'my_transparent_logo_attributes', 10, 1 );

Looks this way:

that works – maybe this will be a good way to have here on both logo and alternate logo
is there another way of code here
if the element is not found – it should place the new elements at the end of the header avia_subpage_container
Maybe a mod knows how to set it in better way : but this is academic because the element ( slug and id is found )

i did this before the new filter on having a child-theme : av-helper-masonry.php
and on line 627 i did : $loop_excerpt = $entry->post_excerpt;
but i do agree now it has to work with that new filter

open your Enfold 4.7.3 functions-enfold.php with a good text-editor ( be aware there is in parent enfold folder a functions.php and functions-enfold.php )
( for Mac OS X f.e. sublime-text or on Windows notepad++ )
find
/* AJAX SEARCH */ … rules what you like to influence.
you can replace functions-enfold.php in your parent theme by an edited one – but then the next update will overwrite these changes.

That is the great benefit of a child-theme. And – as I mentioned above – these pluggable functions can be replaced by a copy of the content in between.

on line 246ff there is:

if(!function_exists('avia_ajax_search')) {
…
}

so everything in between this wrapping if clause can be copied and transfered to your child-theme functions.php
on the next update of the parent theme, this will not be lost.

The disadvantage is that any changes within this function (in your example it is avia_ajax_search ) are not reflected in the update of the parent theme.

The best would certainly be if there was a hook or filter that you could apply to the content here.
But this must always be already implemented in the theme to be able to use it in the child theme.

See here for example the usage of some existing filters to influence search:
https://kriesi.at/documentation/enfold/search/

Unfortunately I don’t see ( maybe one of the Mods or Devs ) if you can add the Comment Counts in an easier way. But as you see in my example playground that it works this way.

so it is not so easy but because on functions-enfold.php the ajax search function is a “pluggable function” you can have here a child-theme solution. Otherwise you had to have a complete functions-enfold.php in your child.
Every function surrounded by:

 if(!function_exists('…')){
…
}

can be substituted by child-theme function with same name! – because child-theme functions are loaded first – when it comes to the function with the same name in parent theme it does not load the parent function ( because of the if not exists clause)

i have edited that function (on base of enfold 4.7.3) and you can copy & paste that part to your child-theme functions.php

add_action( 'wp_ajax_avia_ajax_search', 'avia_ajax_search' );
add_action( 'wp_ajax_nopriv_avia_ajax_search', 'avia_ajax_search' );

function avia_ajax_search()
{
    global $avia_config;
	
    unset($_REQUEST['action']);
    if(empty($_REQUEST['s'])) $_REQUEST['s'] = array_shift(array_values($_REQUEST));
	if(empty($_REQUEST['s'])) die();

    $defaults = array('numberposts' => 5, 'post_type' => 'any', 'post_status' => 'publish', 'post_password' => '', 'suppress_filters' => false, 'results_hide_fields' => '');

    $_REQUEST['s'] = apply_filters( 'get_search_query', $_REQUEST['s']);

    $search_parameters 	= array_merge($defaults, $_REQUEST);

    if ( $search_parameters['results_hide_fields'] !== '' ) {
        $search_parameters['results_hide_fields'] = explode(',', $_REQUEST['results_hide_fields']);
    }
    else {
        $search_parameters['results_hide_fields'] = array();
    }

    $search_query 		= apply_filters('avf_ajax_search_query', http_build_query($search_parameters));
    $query_function     = apply_filters('avf_ajax_search_function', 'get_posts', $search_query, $search_parameters, $defaults);
    $posts		= (($query_function == 'get_posts') || !function_exists($query_function))  ? get_posts($search_query) : $query_function($search_query, $search_parameters, $defaults);

    $search_messages = array(
            'no_criteria_matched' => __("Sorry, no posts matched your criteria", 'avia_framework'),
            'another_search_term' => __("Please try another search term", 'avia_framework'),
            'time_format'         => get_option('date_format'),
            'all_results_query'   => http_build_query($_REQUEST),
            'all_results_link'    => home_url('?' . http_build_query($_REQUEST)),
            'view_all_results'    => __('View all results','avia_framework')
        );
	
    $search_messages = apply_filters('avf_ajax_search_messages', $search_messages, $search_query);
	
    if(empty($posts))
    {
        $output  = "<span class='av_ajax_search_entry ajax_not_found'>";
        $output .= "<span class='av_ajax_search_image ".av_icon_string('info')."'>";
        $output .= "</span>";
        $output .= "<span class='av_ajax_search_content'>";
        $output .= "<span class='av_ajax_search_title'>";
        $output .= $search_messages['no_criteria_matched'];
        $output .= "</span>";
        $output .= "<span class='ajax_search_excerpt'>";
        $output .= $search_messages['another_search_term'];
        $output .= "</span>";
        $output .= "</span>";
        $output .= "</span>";
        echo $output;
        die();
    }

    //if we got posts resort them by post type
    $output = "";
    $sorted = array();
    $post_type_obj = array();
    foreach($posts as $post)
    {
        $sorted[$post->post_type][] = $post;
        if(empty($post_type_obj[$post->post_type]))
        {
            $post_type_obj[$post->post_type] = get_post_type_object($post->post_type);
        }
    }

    //now we got everything we need to preapre the output
    foreach($sorted as $key => $post_type)
    {

        // check if post titles are in the hidden fields list
        if ( ! in_array('post_titles', $search_parameters['results_hide_fields'] ) )
        {
            if(isset($post_type_obj[$key]->labels->name))
            {
                $label = apply_filters('avf_ajax_search_label_names', $post_type_obj[$key]->labels->name);
                $output .= "<h4>".$label."</h4>";
            }
            else
            {
                $output .= "<hr />";
            }
        }

        foreach($post_type as $post) {

            $image = "";
            $extra_class = "";

            // check if image is in the hidden fields list
            if (!in_array('image', $search_parameters['results_hide_fields']))
            {
                $image = get_the_post_thumbnail($post->ID, 'thumbnail');
                $extra_class = $image ? "with_image" : "";
                $post_type = $image ? "" : ( get_post_format($post->ID) != "" ? get_post_format($post->ID) : "standard" );
                $iconfont = $image ? "" : av_icon_string($post_type);

            }

            $excerpt     	= "";

            // two new lines here
            $the_id 		= $post->ID;
			$commentCount 	= get_comments_number($the_id);

            // check if post meta fields are in the hidden fields list
            if ( ! in_array('meta', $search_parameters['results_hide_fields'] ) )
            {
                if(!empty($post->post_excerpt))
                {
                    $excerpt =  apply_filters( 'avf_ajax_search_excerpt', avia_backend_truncate($post->post_excerpt,70," ","...", true, '', true) );
                    
                    $excerpt .= "<br class='linebreak'/><span>".get_the_time( $search_messages['time_format'], $post->ID )."</span>";
                    
                    if ( $commentCount != "0" || comments_open($the_id) && $entry->post_type != 'portfolio')
					{
						$link_add = $commentCount === "0" ? "#respond" : "#comments";
						$text_add = $commentCount === "1" ? __('Comment', 'avia_framework' ) : __('Comments', 'avia_framework' );

						$excerpt .= "<span class='sep'>&nbsp;/&nbsp;</span><span>{$commentCount} {$text_add}</span>";
					}
                }
                else
                {
                    $excerpt = apply_filters( 'avf_ajax_search_no_excerpt', get_the_time( $search_messages['time_format'], $post->ID ), $post );

                    if ( $commentCount != "0" || comments_open($the_id) && $entry->post_type != 'portfolio')
					{
						$link_add = $commentCount === "0" ? "#respond" : "#comments";
						$text_add = $commentCount === "1" ? __('Comment', 'avia_framework' ) : __('Comments', 'avia_framework' );

						$excerpt .= "<span class='sep'>&nbsp;/&nbsp;</span><span>{$commentCount} {$text_add}</span>";
					}
                }
            }

            $link = apply_filters('av_custom_url', get_permalink($post->ID), $post);

            $output .= "<a class ='av_ajax_search_entry {$extra_class}' href='".$link."'>";

            if ($image !== "" || $iconfont) {
                $output .= "<span class='av_ajax_search_image' {$iconfont}>";
                $output .= $image;
                $output .= "</span>";
            }
            $output .= "<span class='av_ajax_search_content'>";
            $output .= "    <span class='av_ajax_search_title'>";
            $output .=      get_the_title($post->ID);
            $output .= "    </span>";
            if ($excerpt !== '') {
                $output .= "    <span class='ajax_search_excerpt'>";
                $output .=      $excerpt;
                $output .= "    </span>";
            }
            $output .= "</span>";
            $output .= "</a>";
        }
    }

    $output .= "<a class='av_ajax_search_entry av_ajax_search_entry_view_all' href='".$search_messages['all_results_link']."'>".$search_messages['view_all_results']."</a>";

    echo $output;
    die();
}

because there was a css rule in enfold that sets the breaks in ajax search to display:none
you had to put this in additon to quick css

#top #searchform br.linebreak {
    display: block;
}

you can test it here on my playground – put in search : buttons
https://webers-testseite.de/

always try – if css tips do not work – with !important:

#top div .av_ajax_search_entry_view_all {
    display: none !important;
}

i can not proove it because all my installations got an inline svg file as logo. But if you look at helper-main-menu.php there is on line 126ff:

$addition = false;
if( ! empty( $headerS['header_transparency'] ) && ! empty( $headerS['header_replacement_logo'] ) )
{
	$addition = "<img src='{$headerS['header_replacement_logo']}' class='alternate' alt='{$headerS['header_replacement_logo_alt']}' title='{$headerS['header_replacement_logo_title']}' />";
}

and on functions-enfold.php on line 1186ff:

if( false === apply_filters( 'avf_hide_transparency_logo_meta', false, $header_replacement_logo_id ) )
{
	$header['header_replacement_logo_title'] = get_the_title( $header_replacement_logo_id );
	$header['header_replacement_logo_alt'] = get_post_meta( $header_replacement_logo_id, '_wp_attachment_image_alt', true );
}

so it has to work for png –
What about the usage of the filter: avf_hide_transparency_logo_meta

Edit: i tested it on a playground – it does not work as it should with png/jpg files
I got an alt-attribute but no title ! on logo
I got neither alt nor title on alternate logo

correct the padding-top of #main

how to influence the lightbox size itself:

.mfp-image-holder .mfp-content {
    max-width: 80vw;
}

how to avoid downscaling when column only can show a scaled version of an image ( not the lightbox )
you can not avoid scaling on responsive case – you only can hope that an image in the srcset fits best to the given space for it.
But you can create your own image-size for best fitting on non responsive case.
…
filter: image_size_names_choose

add_image_size( 'new-size', 2000, 500, true );

function my_custom_sizes( $sizes ) {
    return array_merge( $sizes, array(
        'new-size' => __( 'New Size' ),
    ) );
}
add_filter( 'image_size_names_choose', 'my_custom_sizes' );

Das CSS ist kein Hexenwerk, wenn man sich mal mit den Browser eigenen Developer Tools beschäftigt (nahezu alle bringen da mehr oder weniger gute mit – bei Safari muss man das in den Einstellungen allerdings aktivieren).
siehe mal hier mein Kommentar unten: https://kriesi.at/support/topic/arrange-to-middle/#post-1094963

Da kann man ganz gut vergleichen was an Klassen zB an einem aktivem Menu Punkt anliegt.

Man kann dort “virtuell” css code einfügen, und die Veränderung beobachten – bevor man es überhaupt in das Quick CSS einfügt.

“The video itself actually contains the black bars or space. ”

so re-render your film : https://webers-testseite.de/wp-content/uploads/testbackground.mp4
this is than 16/9 Format.
and give to the color-section : “Custom-height in % …” : 56%
See: https://webers-testseite.de/fullvideo-background/

ja – ist eben leider so, dass es ohne die Seite schwer ist den genauen Code zu generieren. Du siehst allein anhand des vorhandenen Codes von Enfold , dass hier genau geschaut werden muss welche Ebene des Menus nun angesprochen werden soll – die
.av-burger-overlay li a, .av-burger-overlay li li a, .av-burger-overlay li li li a Cascaden sprechen dort mit hinein.

maybe this could be a good alternative : not to have the overlay hamburger on top but shifted that amount of header height downwards:

@media only screen and (min-width: 768px) and (max-width: 989px) {
  .responsive.html_mobile_menu_tablet #top #wrap_all #header {
    position: fixed;
  }
  .av-burger-overlay, 
  .av-burger-overlay-bg {
    top:91px
  }
  
  .html_av-overlay-side-classic #av-burger-menu-ul {
    padding: 0 0 100px !important;
  }
  
  .responsive.html_header_transparency.av-burger-overlay-active #header.av_header_transparency #avia-menu a {
    color:#fff !important;
  }

  .html_av-overlay-side.av-burger-overlay-active #top .av_header_transparency .av-hamburger-inner,
  .html_av-overlay-side.av-burger-overlay-active #top .av_header_transparency .av-hamburger-inner::before,
  .html_av-overlay-side.av-burger-overlay-active #top .av_header_transparency .av-hamburger-inner::after {
   background-color: #fff 
  }
}

@media only screen and (max-width: 767px) {
  .responsive #top #wrap_all #header {
    position: fixed;
  }
  .responsive #top #main {
    padding-top: 80px !important;    /*** play with that - depends on your header-height ***/
  }
  #top .av_header_transparency .header_bg {
    background-color: #FFF;
  }
  .av-burger-overlay, 
  .av-burger-overlay-bg {
    top:81px
  }
  .html_av-overlay-side-classic #av-burger-menu-ul {
    padding: 0 0 100px !important;
  }
}

looks this way on opened hamburger between 768px and 989px

but that header he could have in fixed position on top.

can you try this in quick css:

depends on your burger-menu break point ( when burger is shown – on the demo page 2017 it is at 990px )

@media only screen and (min-width: 768px) and (max-width: 989px) {
  .responsive.html_mobile_menu_tablet #top #wrap_all #header {
    position: fixed;
  }
}

@media only screen and (max-width: 767px) {
  .responsive #top #wrap_all #header {
    position: fixed;
  }
  .responsive #top #main {
    padding-top: 80px !important;    /*** play with that - depends on your header-height ***/
  }
  #top .av_header_transparency .header_bg {
    background-color: #FFF;
  }
}

there is one thing to know the parent of that sub-menu link got the same class: current-menu-item
but it has an additonal one of active-parent-item so you had to exclude this parent from being influenced too:

#av-burger-menu-ul :not(.active-parent-item) .current-menu-item > a {
    color: red !important;
}

better would be to see your page – because sometimes there are second-, third-, fourth-level sub-menu items .

Hi Mike – what do you mean by:

If you are using the newest child theme included with v4.7.3 then this code is already included

The child theme i can download has no entry in the child-theme functions.php and in 4.7.3 i can not find an analog loading –
so I think it’s still necessary to activate it with the snippet from above.

And may i ask for what the if clause is here in your code – i allways use this without:

function avia_include_shortcode_template($paths){
  $template_url = get_stylesheet_directory();
      array_unshift($paths, $template_url.'/shortcodes/');
  return $paths;
}
add_filter('avia_load_shortcodes', 'avia_include_shortcode_template', 15, 1);