html, head, body {
	margin: 0;
	padding: 0;
	height: 100%;
	width: 100%;
}

.calendar {
	display: flex;
	flex-wrap: wrap;
	width: 100%;
	height: 100%;
	justify-content: center;
}

.month {
	flex-wrap: wrap;
	display: flex;
	width: 20%;
	height: 20%;
	border: 1px solid #ccc;
	margin: 1em;
	padding: 0.5em;
}

.day {
	display: flex;
	width: 14%;
	height: 16%;
	justify-content: center;
	align-items: center;
}

.day-lt-low {
	background-color: #00ff0044;
}

.day-lt-medium {
	background-color: #00ff0077;
}

.day-lt-high {
	background-color: #00ff00ff;
}

.month-today {
	border: 1px solid #888;
}

.day-today {
	background-color: #eee;
}

.button {
	width: 10%;
	margin: 0% 20%;
	height: 2em;
}