How to remove the widget shadow?

In order to remove the box shadow around the modern support center embedded widget, add the following script to the onload page script in the widget advanced settings:

(function() {
 var css = 'iframe[id^="Nanorep"] {box-shadow: none;}',
head = document.head || document.getElementsByTagName('head')[0],
style = document.createElement('style');
style.type = 'text/css';
 if (style.styleSheet) {
 style.styleSheet.cssText = css;
 } 
else {
style.appendChild(document.createTextNode(css));
}
 head.appendChild(style);
})();