app.css

html {
	font-family: sans-serif;
}

body {
	margin: 8px;
	padding-right: 8px;
}

section {
	max-width: 50em;
	margin: auto;
}

button {
	display: block;
	width: 100%;
	margin: 5px;
	font-size: inherit;
	line-height: 2;
	margin-top: 1em;
}

input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
	-webkit-appearance: none;
	margin: 0;
}

input[type=number] {
	-moz-appearance: textfield;
}

section table,
section video,
section img,
section div,
section canvas {
	margin: auto;
}

section video,
section img,
section canvas {
	display: block;
	max-width: 100%;
}

th {
	text-align: center;
}

td {
	text-align: right;
}

#page-loading img {
	position: absolute;
	top: 50%;
	left: 50%;
	width: 512px;
	height: 512px;
	margin-left: -256px;
	margin-top: -256px;
}

@media (max-width: 512px) {
	#page-loading img {
		width: 256px;
		height: 256px;
		margin-left: -128px;
		margin-top: -128px;
	}
}

@media (max-width: 256px) {
	#page-loading img {
		display: none;
	}
}

#debug-table td:nth-child(9) {
	background-color: #4c4;
}

#debug-table input {
	width: 1em;
	font-size: inherit;
}