evaldas-raisutis/calendar.css

## calendar.css
#calendar {
  margin-top:5em;
  width: 100%;
}

#month {
  text-align:center;
  text-transform:uppercase;
}

.day {
  display:inline;
  width:13.285%;
  height: 13.285%;
  padding: 3% 0.5%;
  float:left;
  text-align:center;
  font-size:1.2em
}

.day:hover {
  background-color: lightgray;
}

.hasEvent {
  background-color:blue;
}

## calendar.html
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-2.1.0.min.js"></script>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
  <div id="calendar">
    <div id="month"></div>
    <div id="days"></div>
  </div>
</body>
</html>

## calendar.js
var month = {
  "title": "january",
  "days": 31
};


$("#month").text(month.title);

for(var x = 1; x <=  month.days; x++) {
  $("<div>" + x + "</div>")
    .addClass("day")
    .addClass("day-" + x)
    .appendTo("#days");
}
	#calendar {
	margin-top:5em;
	width: 100%;
	}

	#month {
	text-align:center;
	text-transform:uppercase;
	}

	.day {
	display:inline;
	width:13.285%;
	height: 13.285%;
	padding: 3% 0.5%;
	float:left;
	text-align:center;
	font-size:1.2em
	}

	.day:hover {
	background-color: lightgray;
	}

	.hasEvent {
	background-color:blue;
	}
	<!DOCTYPE html>
	<html>
	<head>
	<script src="http://code.jquery.com/jquery-2.1.0.min.js"></script>
	<meta charset="utf-8">
	<title>JS Bin</title>
	</head>
	<body>
	<div id="calendar">
	<div id="month"></div>
	<div id="days"></div>
	</div>
	</body>
	</html>
	var month = {
	"title": "january",
	"days": 31
	};


	$("#month").text(month.title);

	for(var x = 1; x <= month.days; x++) {
	$("<div>" + x + "</div>")
	.addClass("day")
	.addClass("day-" + x)
	.appendTo("#days");
	}