CanvasBlocker/browserAction/browserAction.css

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

div {
	display: block;
}

.action {
	display: block;
	padding: 0.5em;
	margin: 0;
	background-color: transparent;
	background-image: none;
	border: 1px solid currentColor;
	cursor: pointer;
	width: 100%;
	text-align: left;
	height: auto;
	z-index: 1;
	position: relative;
	white-space: nowrap;
	color: currentColor;
}

.action + .action {
	border-top-width: 0;
}

.action:first-child {
	border-radius: 3px 3px 0 0;
}

.action:last-child {
	border-radius: 0 0 3px 3px;
}

.action:active, .action:hover, .action:focus {
	z-index: 10;
}

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

.search {
	box-sizing: border-box;
	padding-left: calc(0.5em + 19px + 0.25em);
	cursor: initial;
}