<h3 style="text-align: center; margin-bottom: 10px;">
  <?php
  $args=array(
  'orderby' => 'name',
  'order' => 'ASC'
  );
$categories=get_categories($args);
  foreach($categories as $category)
  {
  if ( in_category( $category->term_id ))
   {
if ($category->name != "Newsletter" )
{
$category_link = get_category_link( $category->cat_ID );
echo "<a href='".$category_link."' target='_blank' style='color:white;'>".$category->name."</a><br>";
}

   }
  }

    ?>
    <?php /*the_category('
     '); */ ?>
                </h3>