How to clear up modal popup during selection of control?

Question

Hi Team

 

I have a modal popup and i want to find out , how do i clear out once user selects any control from the form? Reason being it becomes blur and remain there and even if close button is used.

<div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
                             <div class="modal-dialog modal-dialog-centered" role="document">
                                 <div class="modal-content">
                                     <div class="modal-header">
                                         <h5 class="modal-title" id="exampleModalLongTitle">Add People</h5>
                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                             <span aria-hidden="true">×</span>
                                         </button>
                                     </div>