body {
	display: grid;
	grid-template-columns: repeat( auto-fill, minmax(10em, 1fr) );
	grid-gap: 1em;
	overflow-y: scroll;
	padding: .5em;
}
button {
  font-size: inherit;
  font-family: system-ui;
  font-weight: 400;
}
.island {
	font-family: monospace;
	display: block;
	min-height: 4em;
	padding: .5em;
	border: .35em solid rgba(60, 60, 60, .4);
}
is-land[ready],
/* Renamed demo tag names */
is-water[ready],
is-gas[ready] {
	background-color: rgba(144,238,144,.6);
	border-color: darkgreen;
}
test-element:defined {
	background-color: lightgreen;
	font-weight: bold;
}