horizon/horizon/static/framework/widgets/toast/toast.html

<div ng-repeat="toast in toast.get()">
  <div class="alert alert-{$ ::toast.type $}">
    <a class="close" ng-click="toast.close($index)"><span class="fa fa-times"></span></a>
    <div><strong>{$ toast.typeMsg $}: </strong>{$ toast.msg $}</div>
  </div>
</div>