put below in your custom.css
@media screen and (max-width: 980px) {
#cb-nexxe__category__folder .ipsType_sectionTitle, #cb-nexxe__category .ipsType_sectionTitle, .cWidgetContainer[data-widgetArea="footer"] ul > li.ipsWidget .ipsType_sectionTitle, .cWidgetContainer[data-widgetArea="header"] ul > li.ipsWidget .ipsType_sectionTitle, .cWidgetContainer[data-widgetArea="footer"] ul > li.ipsWidget .ipsWidget_title, .cWidgetContainer[data-widgetArea="header"] ul > li.ipsWidget .ipsWidget_title:not(#chatboxContainer .ipsWidget_title) {
clip-path: polygon(-0.65% 5%, 80.25% 8.33%, 90.09% 98.33%, -0.50% 91.33%);
}
}