.-pen-placeholder {
	background: #181921 url('https://blog.codepen.io/wp-content/uploads/2012/06/Button-White-Large.png') center
		center/50vmin 50vmin no-repeat;
	height: 100vh;
}

:root {
	--chrome-factor: 0;
	--firefox-factor: 1;
}

@supports not (-moz-appearance: none) {
	:root {
		--chrome-factor: 1;
		--firefox-factor: 0;
	}
}