Trouble with characteristics selection

margin: 0px !important;

<?php
/**
 * @package  HikaShop for Joomla!
 * @version  2.1.1
 * @author  hikashop.com
 * @copyright  (C) 2010-2012 HIKARI SOFTWARE. All rights reserved.
 * @license  GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
 */
defined('_JEXEC') or die('Restricted access');
?><?php
$variant_name = '';
$variant_main = '_main';
$display_mode = '';
if(!empty($this->variant_name)) {
  $variant_name = $this->variant_name;
  if(substr($variant_name, 0, 1) != '_')
    $variant_name = '_' . $variant_name;
  $variant_main = $variant_name;
  $display_mode = 'display:none;';
}
?><div id="hikashop_product_image<?php echo $variant_main;?>" class="hikashop_global_image_div" style="<?php echo $display_mode;?>">
  <div id="hikashop_main_image_div<?php echo $variant_name;?>" class="hikashop_main_image_div">
    <?php
      if(!empty ($this->element->images)){
        $image = reset($this->element->images);
      }
      $height = $this->config->get('product_image_y');
      $width = $this->config->get('product_image_x');
      if(empty($height)) $height=$this->config->get('thumbnail_y');
      if(empty($width)) $width=$this->config->get('thumbnail_x');
      $divWidth=$width;
      $divHeight=$height;
      $this->image->checkSize($divWidth,$divHeight,$image);

      if (!$this->config->get('thumbnail')) {
        if(!empty ($this->element->images)){
          echo '<img src="' . $this->image->uploadFolder_url . $image->file_path . '" alt="' . $image->file_name . '" id="hikashop_main_image"  />';
        }
      } else {
        $style = '';
        if (!empty ($this->element->images) && count($this->element->images) > 1) {
          if (!empty($height)) {
            $style = ' style="height:' . ($height + 20) . 'px;"';
          }
        }
        $variant_name='';
        if(isset($this->variant_name)){
          $variant_name=$this->variant_name;
        }

        ?>
        <div id="hikashop_small_image_div<?php echo $variant_name;?>" class="hikashop_small_image_div">
      <?php
      if (!empty ($this->element->images) && count($this->element->images) > 1) {
        foreach ($this->element->images as $image) {
          echo '<div class="thumbnail_wrapper">';
          echo $this->image->display($image->file_path, 'hikashop_main_image'.$variant_name, $image->file_name, 'class="hikashop_child_image"','', $width,  $height);
          echo "<br>";
          echo "</div>";
        }
      }

    ?>
  </div>
        <div class="hikashop_product_main_image_thumb" id="hikashop_image_main_thumb_div<?php echo $variant_name;?>" <?php echo $style;?> >
          <div style="<?php if(!empty($divHeight)){ echo 'height:'.($divHeight+20).'px;'; } ?>text-align:center;clear:both;" class="hikashop_product_main_image">
            <div style="position:relative;text-align:center;clear:both;width:<?php echo $divWidth;?>px;margin: auto;" class="hikashop_product_main_image_subdiv">
            <?php
              echo $this->image->display(@$image->file_path,true,@$image->file_name,'id="hikashop_main_image'.$variant_name.'" style="margin-top:10px;margin-bottom:10px;display:inline-block;vertical-align:middle"','id="hikashop_main_image_link"', $width,  $height);
              if(!empty($this->element->badges)) 
                $this->classbadge->placeBadges($this->image, $this->element->badges, '0', '0');
            ?>
            </div>
          </div>
        </div>
      <?php
      }
      ?>
      </div>
</div>