:root {
    --underConstructionDisplay: none; /* A fallback default */
}

/* Example usage */
.underconstructionmessage {
    display: var(--underConstructionDisplay);
	opacity: .95;
}

.underconstructionmessage:hover {opacity:1;}

.underconstructionmessage > details > summary {
	background: #fdd !important;
	border: 1px solid red;
	margin-bottom: 2px;
	padding: 2px;
}

.underconstructionmessage > details {
	background: #fee;
	font-size: 11px;
	width: 250px;
	word-wrap: break-word;
	padding: 2px !important;
    margin: 0;
	font-weight: 700;
}