Hide Google Calendar Appointment description by deciMae

/* ==UserStyle==
@name           Hide Google Calendar Appointment description
@namespace      calendar.google.com
@version        0.3
@description    Hides the description of your appointments, to make it easier to make an appointment with someone without showing the entire calendar (in case that's sensitive). Hover over the appointment to make it temporarily visible.
@author         deciMae
@license        MIT
==/UserStyle== */

@-moz-document domain("calendar.google.com") {
	div[aria-hidden="true"]>div>[style*="max-height"]>span>span,
	div[data-stacked-layout-chip="true"]>span>span:last-child,
	div[role="gridcell"]>div[role="button"] {
		opacity: 0;
		transition-delay: 0s;
	}
	
	
	div:hover>div[aria-hidden="true"]>div>div[style*="max-height"]>span>span,
	div[data-stacked-layout-chip="true"]:hover>span>span:last-child,
	div:hover>div[role="gridcell"]>div[role="button"] {
		opacity: 1;
		transition-delay: .8s;
	}
}