Hi jens,
edit /functions/scripts-styles-register.php
line 98
Replace MTHEME_CSS with MTHEME_STYLESHEET
The code will be as
wp_enqueue_style( 'Responsive', MTHEME_STYLESHEET . '/responsive.css',array( 'MainStyle' ),false, 'screen' );
You can then create a responsive.css file in your child themes root folder and import all the code from /css/responsive.css file
Let me know if there’s any problems.
Thanks
