原图：

<div class="form-tags">     <input type="text" data-toggle="tags" style="display: none;">     <span class="label label-info">123</span>     <span class="label label-info">123</span>     <span class="label label-info">123</span>     <span class="label label-info">123</span>     <span class="label label-info">123</span>     <input class="input-tags form-control" placeholder="请输入标签，最多5个~"> </div>

当span数量达到某个量级后，会出现input框下滑的情况，请问如何解决？