Here you go:

#top .avia-icon-list > li .iconlist-char:before {
    content: "";
    height: 60px;
    width: 60px;
    background-size: contain;
    display: block;
}

#top .avia-icon-list > li:nth-child(1) .iconlist-char:before{
    background: url(https://kriesi.at/wp-content/themes/kriesi/images/logo.png) no-repeat top center;    
}
#top .avia-icon-list > li:nth-child(2) .iconlist-char:before{
   background: url(https://kriesi.at/wp-content/themes/kriesi/images/logo.png) no-repeat top center;    
}
#top .avia-icon-list > li:nth-child(3) .iconlist-char:before {
   background: url(https://kriesi.at/wp-content/themes/kriesi/images/logo.png) no-repeat top center;    
}

Hey!

Some icon codes are wrong, change your code to:

// Register new icon as a theme icon
function avia_add_custom_icon($icons) {
$icons[‘yelp’]	= array( ‘font’ =>’yelp’, ‘icon’ => ‘ue800’);
$icons[‘foursquare’]	= array( ‘font’ =>’foursquare’, ‘icon’ => ‘ue801’);
$icons[‘tripadvisor’]	= array( ‘font’ =>’yelp’, ‘icon’ => ‘ue801’);
$icons[‘houzz’]	= array( ‘font’ =>’houzz’, ‘icon’ => ‘ue801’);
return $icons;
}
add_filter(‘avf_default_icons’,’avia_add_custom_icon’, 10, 1);

// Add new icon as an option for social icons
function avia_add_custom_social_icon($icons) {
$icons[‘Yelp’] = ‘yelp’;
$icons[‘Foursquare’] = ‘foursquare’;
$icons[‘Tripadvisor’] = ‘tripadvisor’;
$icons[‘Houzz’] = ‘houzz’;
return $icons;
}
add_filter(‘avf_social_icons_options’,’avia_add_custom_social_icon’, 10, 1);

Also, i’d suggest using a single font file for all these icons.

Regards,
Josue

Hey!

Try adding this code to the Quick CSS:

.flex_cell.avia-full-contain{
    background-size: 100% 100% !important;
}

Cheers! 
Josue

Hey!

Check the images used in the demos, for example for fullscreen elements a good size would be 1500×1000. We’re in multiple timezones so that’s variable.

Cheers!
Josue

Hi,

Can you post the link to your website please?

Regards,
Josue

Hey!

Can you please enable file editing on theme files or provide me a FTP account too?

You need to make this file writable before you can save your changes. See the Codex for more information.

Regards,
Josue

Hey!

Please update the theme to the latest version (3.5.1).

Best regards,
Josue

Hola,

Prueba con este:

	add_filter( 'wp_nav_menu_items', 'avia_append_search_nav', 10, 2 );
	add_filter( 'avf_fallback_menu_items', 'avia_append_search_nav', 10, 2 );

	function avia_append_search_nav ( $items, $args )
	{	
		if ((is_object($args) && $args->theme_location == 'avia') || (is_string($args) && $args = "fallback_menu")) {			
	    global $avia_config;
	    ob_start();
	    get_search_form();
	    $form =  htmlspecialchars(ob_get_clean()) ;

	    $items .= '<li id="menu-item-search" class="noMobile menu-item menu-item-search-dropdown">
						<a href="?s=" rel="nofollow" data-avia-search-tooltip="'.$form.'" '.av_icon_string('search').'><span class="avia_hidden_link_text">'.__('Search','avia_framework').'</span></a>
	    		   </li>';
	    }
	    return $items;
	}

Saludos,
Josue

Hi,

Can you please create me a WordPress administrator account? post it here as a private reply.

Regards,
Josue

Hey!

Can you post a screenshot/mockup of what would you want to achieve?

Best regards,
Josue

Hey!

No, you’d need to run another conditional (in_category):

		if (is_category('slug_category') || in_category('slug_category'))  $header['header_position'] = 'header_sidebar';
		if($header['header_position'] != "header_top") return avia_header_setting_sidebar($header, $single_val);

Regards,
Josue

Try this;

#top .av_font_icon .av-icon-char {
    width: 120px !important;
    height: 120px !important;
    line-height: 120px !important;
    padding:0;
    text-align: center;
    
}

#top .av_font_icon .av-icon-char:before{
    font-size: 120px;
}

Hi,

Can you please create us a WordPress administrator account? post it here as a private reply.

Regards,
Josue

Glad you managed to get it working and thanks for sharing your solution.

Regards,
Josue

You are welcome, glad to help :)

Regards,
Josue