styles.css

html, body {
	margin: 0px;
}

canvas {
	display: block;
}


.btn-circle {
	width: 32px;
	height: 32px;
	line-height: 32px;
	text-align: center;
	padding: 0;
	border-radius: 50%;
}

.norm-height {
	height: 38px;
}

.header-height {
	height: 60px;
}

.bottom-options-height {
	height: 180px;
}

.solve-btn-height {
	height: 32px;
}