Alerts are created with the
.alert class, followed by one of the four contextual classes
alert-link class to any links inside the alert box to create "matching colored links":
To close the alert message, add a
.alert-dismissable class to the alert container. Then add
data-dismiss="alert" to a link or a button element (when you click on this the alert box will disappear).
.in classes adds a fading effect when closing the alert message: