Update index.html

index.html

@@ -342,6 +342,11 @@ audio {
                 <div class="modal-dialog">
                        
                            <div class="modal-content container3">
+                             <div class="m-auto">
+                <button type="button" class="close mb-auto" data-dismiss="modal" aria-label="Close">
+                    <span aria-hidden="true">&times;</span>
+                  </button>
+                             </div>
                           <div>
                                <section id="about">
         <div class="background-image">