jquery – 如何使显示：flex工作响应性 – Bootstrap？

我有一个3列的行，在cols里面有一个下拉菜单，如果我选择一个选项，它会显示如下。
当我点击这个选项按钮时，列的高度可以扩展/ flex /增加，它的工作原理就是这样。
为此，我将这个CSS元素添加到行全屏幕

@media only screen and (min-width: 1201px)
.payfullMajsticBlox .portlet-body > .row {
    display: flex;
}

这是我的HTML代码

<div class="payfullMajsticBlox">
    <div class="portlet-title">
        <div class="caption">
            <i class="fa fa-cogs font-green-sharp"></i>
            <span class="caption-subject font-green-sharp bold uppercase">POS AYARLARI</span>
        </div>
        <div class="tools">
            <a class="collapse" href="javascript:;" data-original-title="" title="">
            </a>
            <a class="config" data-toggle="modal" href="#portlet-config" data-original-title="" title="">
            </a>
            <a class="reload" href="javascript:;" data-original-title="" title="">
            </a>
            <a class="remove" href="javascript:;" data-original-title="" title="">
            </a>
        </div>
    </div>
    <div class="portlet-body">
        <!--<h4>Pulsate any page elements.</h4>-->
        <div class="row">
            <div class="col-lg-3 col-md-6 col-sm-6   payfullcol popovers" data-content="XXX" data-placement="top" data-trigger="hover" data-container="body" data-original-title="" title="">
                <h6 class="payfullTitle">API Kullanıcı adı</h6>
                <div class="form-group form-md">
                    <input type="text" class="form-control" id="form_control_1" placeholder="Merchant ID">
                </div>
            </div>
            <div class="col-lg-3 col-md-6 col-sm-6   payfullcol popovers" data-content="XXX" data-placement="top" data-trigger="hover" data-container="body" data-original-title="" title="">
                <h6 class="payfullTitle">Şifre</h6>
                <div class="form-group form-md">
                    <input type="text" class="form-control" id="form_control_1" placeholder="API Şifresi">
                </div>
            </div>
            <div class="col-lg-3 col-md-6 col-sm-6   payfullcol popovers" data-content="XXX" data-placement="top" data-trigger="hover" data-container="body" data-original-title="" title="">
                <h6 class="payfullTitle">Mağaza Numarası</h6>
                <div class="form-group form-md">
                    <input type="text" class="form-control" id="form_control_1" placeholder="Client ID / Terminal">
                </div>
            </div>
            <div class="col-lg-3 col-md-6 col-sm-6   payfullcol popovers" data-content="XXX" data-placement="top" data-trigger="hover" data-container="body" data-original-title="" title="">

                <h6 class="payfullTitle">3D Secure kullan</h6>
                <div class="clearfix">
                    <div class="btn-group btn-group payfullBtns" data-toggle="buttons">
                        <label class="btn green active" id="P1BsecureS1">
                            <input type="radio" class="toggle">Varsayılan</label>
                        <label class="btn green" id="P1BsecureS2">
                            <input type="radio" class="toggle">3D Secure</label>
                    </div>
                </div>
                <br><br>

                <div id="P1B3DSecure" class="payfullShowHide" style="display: none;">
                    <h6 class="payfullTitle">Üye İş Yeri Anahtarı</h6>
                    <div class="form-group form-md">
                        <input type="text" class="form-control" id="form_control_1" placeholder="POS Net Id / Store key">
                    </div>
                </div>
            </div>
        </div>

    </div>
</div>

所以初步的看法是这样的

当它被点击

当要响应时，我将显示：在平板电脑初始视图中禁用flex，具有下拉列的列的高度与其他高度不同。核实。这样做的原因是如果我没有禁用它是不响应添加所有。

当我启用显示：flex;它变得不响应，看起来像这样，这是不响应的。

你可以看到一个gif，我已经展示了它的行为

http://d.pr/i/iv8J/3rSricgh

底线是

>如果我将row元素属性设置为display：flex，它将变得无响应。

$("#add").on("click",function(){
   	$(this).parent().prepend('<div class="added-content" >Added Content </div>');
});

.flexBox{
    display: -webkit-Box;
    display: -moz-Box;
    display: -ms-flexBox;
    display: -webkit-flex;
    display: flex;  
  flex-wrap: wrap;
  -webkit-flex-wrap: wrap;
}
.flex-item{
  
  flex:1;
    display: -webkit-Box;
    display: -moz-Box;
    display: -ms-flexBox;
    display: -webkit-flex;
    display: flex;  
}
.flex-item p{
  margin: 10px 5px;
  padding: 10px;
  background:yellow;
    -webkit-flex: 1;
    -ms-flex: 1;
    flex: 1;
}
#add{
    padding:5px;
    background:red;
}
.added-content{
    background:blue;
    margin-bottom:5px;
    color:white;
}
.breakpoint{
  display:none;
}

@media all and (max-width: 1201px){
  .flex-item{
      flex: none;
      width:25%;
  }
}

@media all and (max-width: 601px){
  .flex-item{
      flex: none;
      width:50%;
  }
}

@media all and (max-width: 401px){
  .flex-item{
      flex: none;
      width:100%;
  }
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="flexBox">
  <div class="flex-item">
    <p>Content</p>
  </div>
  <div class="flex-item">
    <p>Content</p>
  </div>
  <div class="flex-item">
    <p>Content</p>
  </div>
  <div class="flex-item">
      <p ><button id="add">Add Content on Click</button></p>
  </div>
  <div class="flex-item">
    <p>Content</p>
  </div>
  <div class="flex-item">
    <p>Content</p>
  </div>
  <div class="flex-item">
    <p>Whole lot of content 
      Whole lot of content 
      Whole lot of content 
      Whole lot of content 
      Whole lot of content
        Whole lot of content 
      Whole lot of content  Whole lot of content 
      Whole lot of content  Whole lot of content 
      Whole lot of contentContent</p>
  </div>
  <div class="flex-item">
    <p>Content</p>
  </div>

  
</div>