@media only screen and (min-width: 480px) and (max-width: 768px){
<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function do_action() in /home/users6/w/wli7858/www/wordpress/wordpress/wp-content/themes/grafik/assets/css/style_dynamic_responsive.php:2
Stack trace:
#0 {main}
  thrown in <b>/home/users6/w/wli7858/www/wordpress/wordpress/wp-content/themes/grafik/assets/css/style_dynamic_responsive.php</b> on line <b>2</b><br />