为什么我按esc和点击背景的时候，只有弹出框消失了，背景色还在？

Question

<button class="btn btn-primary" type="button" data-toggle="modal" data-target=".modal-lg" > 大的模态弹出框</button><div class="modal fade modal-lg" tabindex="-1" aria-hidden="true" role="modal-dialog" data-keyboard="true" data-backdrop="true">         <div class="modal-dialog   modal-lg">            <div class="modal-content">                     <div class="molda-header">                         <button class="close" type="button" data-dismiss="modal">                                 <span aria-hidden="true">&times;</span>                                 <span class="sr-only">close</span>                         </button>                         <h4 class="modal-title">动态模拟弹出框</h4>                   </div>                  <div class="modal-body">                         <p>弹出框主体</p>                 </div>                 <div class="modal-footer">                         <button class="btn btn-default" type="button" data-dismiss="modal">关闭</button>                         <button class="btn btn-primary" type="button">保存</button>                 </div>         </div>     </div></div>

Answer 1

缩进改一下 看的好难受