.add-to-calendar::part(atcb-button){color:#000;box-shadow:none;background:0 0;border:none;border-bottom:1px solid #000;border-radius:0;margin:0;padding:0;font-family:Trebuchet MS,sans-serif;font-weight:500;text-decoration:none}.add-to-calendar::part(atcb-button):focus{outline:none}