html, body{
	height: 100%;
}
body {
	margin: 0;
}
button{
	font-size: 1em;
	padding: 0.5em;
}
#main{
	display: flex;
	flex-flow: row wrap;
	align-items: center; 
	justify-content: space-around;
	height: 88%;
}
#toolbar{
	display: flex;
	flex-flow: row wrap;
	align-items: center; 
	justify-content: space-around;
	height: 12%;
}