table.visible { 
	border: 1px solid black;
	margin: 2px;
	padding: 5px;
}

table.visible td,th {
	padding: 5px;
	text-align: center;
	min-width: 8ex;
}

table.visible th {
	background-color: #f2f2f2;
}

table.visible td.bstvorl {
	background-color: #ccff99;
}

table.visible td.bstueb {
	background-color: #77bbee;
}

table.visible td.bsrueb {
	background-color: #ffff77;
}

table.visible td.abgabe {
	background-color: #ffcc99;
}

table.visible td.ferien {
	background-color: #ccffff;
	font-style: italic;
}

table.visible td.tentative {
	color: #777777;
	font-size: small;
}

table.visible tr.date td {
    border-top: 2px solid #f2f2f2;
    font-size: 90%;
}

div#navbar ul {
	margin-left: 1em;
}

code {
	color: unset;
	background-color: unset;
}

p.important {
	background-color: #ffcccc;
	padding: 5px;
}