php template code - all properties page display issue - php

Question

My page: http://kevinkang.ca/en_US/all-properties/ was broken yesterday.
But I can't find any problem on these. Can anyone help me to find out the problem?
<div class="grid-x all-properties-page">
<?php
$args = array( 'category__not_in' => array( 4, 8, 9, 10 ) , 'posts_per_page' => -1 );
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post(); ?>
<?php $i=0; ?>
<div class="medium-12 cell padding-top-page">
<div class="home-data description-title-price">
<div class="grid-container">
<div class="grid-x">
<div class="medium-6 cell">
<?php the_title(); ?>
</div>
<div class="medium-6 cell text-right">
<?php the_field('price'); ?>
</div>
</div>
</div>
</div>
<a href="<?php the_permalink(); ?>"><div class="grid-x">
<ul class="images3">
<?php
//Get the images ids from the post_metadata
$images = acf_photo_gallery('3-images', $post->ID);
$img3=0;
if( count($images) ):
//Cool, we got some data so now let's loop over it
foreach($images as $image):
$id = $image['id']; // The attachment id of the media
$title = $image['title']; //The title
$caption= $image['caption']; //The caption
$full_image_url= $image['full_image_url']; //Full size image url
$full_image_url = acf_photo_gallery_resize_image($full_image_url, 1562, 760); //Resized size to 262px width by 160px height image url
$thumbnail_image_url= $image['thumbnail_image_url']; //Get the thumbnail size image url 150px by 150px
$url= $image['url']; //Goto any link when clicked
$target= $image['target']; //Open normal or new tab
$alt = get_field('photo_gallery_alt', $id); //Get the alt which is a extra field (See below how to add extra fields)
$class = get_field('photo_gallery_class', $id);
$img3++;
?>
<?php if( !empty($url) ){ ?><a href="<?php echo $url; ?>" <?php echo ($target == 'true' )? 'target="_blank"': ''; ?>><?php } ?>
<li style="background-image: url(<?php echo $full_image_url; ?>);" class="img-list<?php echo $img3; ?>">
<?php if( !empty($url) ){ ?></a><?php } ?></li>
<?php endforeach; endif; ?>
</ul>
<?php foreach ( get_the_category() as $value) {
$i++; ?> <h3 class="cat<?php echo $i; ?> <?php echo $value->name; ?>"><?php echo $value->name;} ?></h3>
</div></a>
<div class="grid-container pr-address-bg">
<div class="address-cont price-address">
<?php the_field('price'); ?>
<?php the_field('address_first_line'); ?>
</div>
</div>
</div>
<?php endwhile; ?>
</div>

Answer 1

I see you have a lot of problems in your HTML ( inside , multiple tags. First check your HTML with https://validator.w3.org/. It looks the main parts of the problems come from header.php. I would have a look.