body {
	margin: 0;
	font-family: sans-serif;
	background: #111;
	color: white;
	text-align: center;
}

h1 {
	font-size: 64px;
}

h2 {
	font-size: 48px;
}

canvas {
	background: #111;
	display: block;
	margin: 20px auto;
}

.menu button {
	display: block;
	width: 200px;
	margin: 10px auto;
}

.menu, .game-over {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	text-align: center;
}

button {
	padding: 10px 20px;
	margin: 10px;
	font-size: 18px;
	cursor: pointer;
	background: #333;
	color: white;
	border: 2px solid white;
	border-radius: 5px;
}

button:hover {
	background: #555;
}

#instructionsScreen {
    overflow-y: auto;
    max-height: 90vh;
    
    /* prevents layout shift from scrollbar */
    scrollbar-gutter: stable;
    
    /* gives breathing room so content + scrollbar don’t feel cramped */
    padding-right: 20px;
}

#watermark {
	position: fixed;
	bottom: 10px;
	text-align: right;
	right: 15px;
	font-size: 14px;
	color: rgba(255, 255, 255, 0.6);
	pointer-events: none;
	z-index: 9999;
}

table {
	margin: 0 auto;
	border-collapse: collapse;
}

table, th, td {
  border: 1px solid white;
}