body {
	margin-left: 10%;
	margin-right: 10%;
	background-color: lightgray;
	font-family: Helvetica,sans-serif;
}

header {
	margin-bottom: 3em;
	display: flex;
}

#logo {
	height: 5em;
	margin-right: 1em;
}

main {
	display: grid;
	gap: 2em;
	background-color: whitesmoke;
	padding: 5%;
	border-radius: 0.5em;
	box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14),
				0 3px 1px -2px rgba(0, 0, 0, 0.2),
				0 1px 5px 0 rgba(0, 0, 0, 0.12);
}

#avail_sites {
	margin: 0;
	padding-left: 1em;
	list-style-type: none;
}

#users {
	border: 1px solid lightgray;
	border-collapse: collapse; 
}

#users tr {
	border: 1px solid lightgray;
}

#users td {
	text-align: center;
}