<form class="form-horizontal">
      <div class="form-group">
        <label class="control-label col-sm-2" for="email">Username:</label>
        <div class="col-sm-10">
          <input class="form-control" ng-model="username" placeholder="Enter username">
        </div>
      </div>
      <div class="form-group">
        <label class="control-label col-sm-2" for="pwd">Password:</label>
        <div class="col-sm-10">
          <input type="password" class="form-control" placeholder="Enter password" ng-model="password">
        </div>
      </div>
      <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
          <button type="submit" class="btn btn-default" ng-click="login()">Submit</button>
        </div>
      </div>
</form>