:root {
	--unit: 1vmin;
	--zoom: 100;
	--available-screen-min: 665;
	--px: calc(var(--zoom) * (var(--unit) / var(--available-screen-min)));

	--auto-rotate-duration: 10s;
	--auto-rotate-timing-func: ease;
	--auto-rotate-direction: forwards;

	--fallback-fonts: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica,
		Arial, Ubuntu, sans-serif, 'Apple Color Emoji', 'Twemoji Mozilla',
		'Segoe UI Emoji', 'Segoe UI Symbol';
}

*,
*::before,
*::after {
	padding: 0;
	margin: 0;
	box-sizing: border-box;
	-webkit-text-size-adjust: none;
	text-size-adjust: none;
}

*::before,
*::after {
	display: block;
}

body {
	touch-action: none;
}

html {
	cursor: grab;
}

html:active {
	cursor: grabbing;
}

html,
body {
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	scrollbar-width: thin;
	font-size: 0;
	overflow: hidden; /* to make touch gestures work correctly */
}

html::before {
	content: '';
	position: fixed;
	left: 0;
	top: 0;
	width: 100vw;
	height: 100vh;
	background-image: radial-gradient(circle at 50% 50%, #fff, #f8f8f8);
	background-size: 100vw 100vh;
	background-repeat: no-repeat;
}