Basic Bootstrap Alerts
Wrap any text and an optional dismiss button in
.alert and one of the four contextual classes (e.g.,
.alert-success) for basic alert messages.
Well done! You successfully read this important alert message.
Heads up! This alert needs your attention, but it's not super important.
Warning! Better check yourself, you're not looking too good.
Oh snap! Change a few things up and try submitting again.