Bootstrap alert in a fixed floating div at the top of page

If you want an alert that is fixed to the top and you are using bootstrap navbar navbar-fixed-top the following style class will overlay they alert on top of the nav:

.alert-fixed {
    position:fixed; 
    top: 0px; 
    left: 0px; 
    width: 100%;
    z-index:9999; 
    border-radius:0px
}

This worked well for me to provide alerts even when the user is scrolled down in the page.