CanvasBlocker/browserAction/browserAction.css

body {
	padding: 0.5em;
	margin: 0;
}

div {
	display: block;
}

.action .icon {
	vertical-align: text-bottom;
	height: 19px;
	width: 19px;
	margin-right: 0.25em;
	background-color: currentColor;
	mask-size: 100%;
	display: inline-block;
}

.action.search {
	padding-left: calc(0.5em + 19px + 0.25em);
}

#addonStatus {
	border: none;
	display: block;
	margin: 5px auto;
	width: 40px;
	min-width: 0;
	height: 40px;
	background: none;
	background-position: 50%;
	background-size: 100%;
	cursor: pointer;
}

#addonStatus.unknown {
	background-image: radial-gradient(black, rgba(0, 0, 0, 0), transparent);;
}
#addonStatus.off {
	background-image: url(../icons/browserAction-whitelisted.svg);
}
#addonStatus.on {
	background-image: url(../icons/browserAction-notPrinted.svg);
}