TutsMix

If the code below doesn’t work, you’re doing something else wrong in that file:

<?php

/**
 * @link http://codex.wordpress.org/Class_Reference/WP_Query
 */
$prefix_query = new WP_Query(array(
    // Use category slug, NOT name.
    'category_name' => 'mangas',
    'posts_per_page' => 2,
    // If get_query_var('paged') doesn’t work, try get_query_var('page').
    'paged' => max(1, get_query_var('paged')),
));

if ($prefix_query->have_posts())
{
    while ($prefix_query->have_posts())
    {
        $prefix_query->the_post();

        echo get_the_title().'<br />';
    }
}
else
{
    echo 'No posts found.';
}

wp_reset_postdata();

?>

You should define $return_string outside the while loop. Inside the while loop, you should append data to $return_string.

Here, I’ve changed your function a little:

function client_flavors_slider_function($atts)
{
	extract(
		shortcode_atts(
			array(
				'posts' => 3,
			),
			$atts,
			'flavor-slider'
		)
	);

	$flavor_query = new WP_Query(
		array(
			'category_name'  => 'audio',
			'posts_per_page' => $posts,
		)
	);

	$flavor_output = false;

	if ($flavor_query->have_posts())
	{
		while ($flavor_query->have_posts())
		{
			$flavor_query->the_post();

			$flavor_output .= '<div class="item active">';
			$flavor_output .= '<div class="featured-image col-sm-5">'.get_the_post_thumbnail().'</div>';
			$flavor_output .= '<div class="post-content col-sm-5 col-sm-offset-2">';
			$flavor_output .= '<h2>'.get_the_title().'</h2>';
			$flavor_output .= '<p>'.get_the_content().'</p>';
			$flavor_output .= '</div>';
			$flavor_output .= '</div>';
		}
	}

	return $flavor_output;
}

And the code of the single-product.php file?

I recommend you to use a child theme.

NOTE: Replace theme-name with your theme’s name (e.g. twentyfourteen).
NOTE: Replace Theme Name Child with your theme’s name (e.g. Twenty Fourteen Child).

1. Create a new directory called theme-name-child in the themes directory.
2. Create a new file called style.css in the theme-name-child directory.
3. Paste the code below in the style.css file.

/*
Theme Name: Theme Name Child
Template: theme-name
*/

@import "../theme-name/style.css";

4. Create a new file called functions.php in the theme-name-child directory.
5. Paste the code below in the functions.php file.

<?php

function open_comment_author_link_in_new_window($link)
{
	$link = str_replace('<a', '<a target="_blank"', $link);

	return $link;
}

add_filter('get_comment_author_link', 'open_comment_author_link_in_new_window');

6. Activate the child theme from your Dashboard.

Try using:

function add_my_post_types_to_query($query)
{
	if ($query->is_home() AND $query->is_main_query())
	{
		$query->set('post_type', array('post', 'custom'));

		$query->set('post__not_in', array(5));
	}
}

add_action('pre_get_posts', 'add_my_post_types_to_query');

You’re right @esmi, but the style.css file has already been edited.

Try using:

.page-template-tpl-contact-php .section
{
	width: 650px;
}

Have you tried a caching plugin?

https://wordpress.org/plugins/w3-total-cache/