Sort posts in a grid

I don’t know what I’m doing wrong, but am trying to sort posts in a grid

Here is the link

Please can someone help with this

Here are my snippets:

<?php /*?><?php
$args = array('posts_per_page' => -1, 'orderby' => 'date' );

$myQuery = new WP_Query($args);

$date = '';

if ( $myQuery->have_posts() ) : while ( $myQuery->have_posts() ) : $myQuery->the_post();

if ( $date != get_the_date() ) {
    echo $date;
    echo '<hr />';
    $date = get_the_date();
}

the_title(); // or whatever you want here.
echo '<br />';

endwhile; endif;
wp_reset_postdata(); ?><?php */?>

  <?php 

  $args = array('cat'=>7,'posts_per_page'=>18 );

$myQuery = new WP_Query($args);

$date = '';

 // query_posts(array('cat'=>7,'posts_per_page'=>18  )); ?>

<?php //echo get_the_date(); ?>

    <?php //while ( have_posts() ) : the_post(); ?>

<?php if ( $myQuery->have_posts() ) : while ( $myQuery->have_posts() ) : $myQuery->the_post();
if ( $date != get_the_date() ) { ?>
 <?php    $date = get_the_date(); ?>
<div class="content-text"> <?php  echo $date; ?></div>
<?php /// echo '<hr />'; ?>

<?php }

?>

 <div class="loop <?php if ($_COOKIE['mode'] == 'grid') echo 'grid'; else echo 'grid'; ?> clear">

        <div <?php post_class('post2 clear'); ?> id="post_<?php the_ID(); ?>">

            <?php if ( has_post_thumbnail() ) :?>

            <a href="<?php the_permalink() ?>" class="thumb"><?php the_post_thumbnail('thumbnail', array(

                        'alt'	=> trim(strip_tags( $post->post_title )),

                        'title'	=> trim(strip_tags( $post->post_title )),

                    )); ?></a>

            <?php endif; ?>

<h2><a href="<?php the_permalink() ?>"><?php if (strlen($post->post_title) > 50) {

echo substr(the_title($before = '', $after = '', FALSE), 0, 70) . '...'; } else {

the_title();

} ?></a></h2>

 <!--div class="loopview"> <?php if(function_exists('the_views')) { the_views(); } ?></div-->

			<a href="<?php the_permalink() ?>" class="loop_play" style="left:35px;">Play</a>

        </div>

	</div>

    <?php //endwhile; ?>

<?php endwhile; endif; ?>	

	<div class="bottom_loop"></div>

	<br />