This code snippet creates a shortcode with the html content . To call the shortcode you can call it on the WordPress editor by this [clientcat]

function ns_clientcat_function() {

 $variable = <<<XYZ

  <div style="width: 0px; height: 0px; overflow: hidden" itemscope="" itemtype="">
  <span itemprop="itemreviewed">blabla</span>
  <span itemprop="description">Company rating</span>
  <span itemprop="summary">5 stars service</span>
  <span itemprop="description">5 stars service</span>
  <meta itemprop="worstRating" content="0">
  <span itemprop="rating">5</span>
  <span itemprop="votes">37</span>; <span itemprop="bestRating"></span>

 echo $variable;

add_shortcode( 'clientcat', 'ns_clientcat_function' );