使用Bootsrap 3和AngularJS在输入字段后添加星号

<div class="form-group form-group-lg">
    <label class="col-md-2 control-label">{{translation.FIRST_NAME}}:</label>
    <div class="col-md-10 required">
        <input type="text" name="firstName" class="form-control" ng-model="Addressid.nameFirst" ng-minlength="3" placeholder="First Name" required>
        <div ng-messages="rmaForm.firstName.$error">
            <div ng-message="required">
                Please enter your first name
            </div>
        </div>
    </div>
</div> 
<div class="form-group form-group-lg">
    <lab