The following code shows how to show closable Info Alert Message.
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet"
href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
<link rel="stylesheet"
href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap-theme.min.css">
<script type="text/javascript"
src="http://code.jquery.com/jquery.min.js"></script>
<script
src="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
<style type="text/css">
.bs-example {<!--from www. j a va 2s .c om-->
margin: 20px;
}
</style>
</head>
<body>
<div class="bs-example">
<div class="alert alert-info">
<a href="#" class="close" data-dismiss="alert">×</a> <strong>Note!</strong>
Please read the comments carefully.
</div>
</div>
</body>
</html>