Mettre 3 articles par lignes

<?php 
 global $post, $query_string, $SMTheme;
 

 
 
 
 if (have_posts()) :
 
 
 
 
 if (!isset($_GET['ajaxpage'])) {?> <div class='articles'> <?php }
 
 
 
 
 while (have_posts()) : the_post(); ?>
  <div class='one-post'>
   <div id="post-<?php the_ID(); ?>" <?php post_class("post-caption"); ?>>
   <?php  //Title
   if (!is_single()&&!is_page()) { ?>
    <h2><a href="<?php the_permalink(); ?>" title="<?php printf( $SMTheme->_( 'permalink' ), the_title_attribute( 'echo=0' ) ); ?>" class='post_ttl'><?php the_title(); ?></a></h2>
   <?php } else { ?>
    <h1><?php the_title(); ?></h1>
   <?php } 
   
   
   //Post meta (comments, date, categories)
   if (!is_page()) {?><p class='post-meta'>
   
    <span class='post-date'><?php echo get_the_date(); ?></span>,
    
    <?php echo $SMTheme->_('before-category'); ?><?php the_category(', '); 
    
    if(comments_open( get_the_ID() ))  {
                    ?> | Comments: <span class='post-comments'><?php comments_popup_link( 0, 1, '%' ); ?></span>
    <?php } 
    edit_post_link( $SMTheme->_( 'edit' ), '     |     <span class="edit-link">', '</span>' );
    ?>
   </p><?php } ?>
   
   </div>
   <div class='post-body'>
   
<?php // Post featured image
 if(has_post_thumbnail())  {
  if (!is_single()){ ?><a href="<?php the_permalink(); ?>" title="<?php printf( $SMTheme->_( 'permalink' ), the_title_attribute( 'echo=0' ) ); ?>"> <?php }
   the_post_thumbnail(
    'post-thumbnail',
    array("class" => $SMTheme->get( 'layout','imgpos' ) . " featured_image")
   );
  if (!is_single()){ ?></a><?php }
 }

    ?>
    
   
   
   
   
   
   
    <?php
    //Post content
    if (!is_single()&&!is_page()) { 
     if ( ! post_password_required() ) { smtheme_excerpt('echo=1'); } else the_content('');
     ?><a href='<?php the_permalink(); ?>' class='readmore'><?php echo $SMTheme->_( 'readmore' ); ?></a><?php
    } else {
     the_content('');
    }
    wp_link_pages(); ?>
   </div>
  </div>
  
  
  
  
 <?php endwhile; ?>
 
 
 
 
 
 <?php if (!isset($_GET['ajaxpage'])) {?></div><?php } ?>
 
 
 
 
 
 
<?php endif; ?>

<?php 
 global $SMTheme;
 
 get_header(); 
 
 get_template_part('theloop');
   
 the_tags("<div class='tags'><span>".$SMTheme->_( 'tags' ).":  </span>", ", ","</div>");
   
 get_template_part('relatedposts');
   
 comments_template();
   
 get_template_part('navigation');
 
 get_footer();
?>