test

www/index.html

@@ -109,8 +109,14 @@
         <div class="modal-dialog modal-xl modal-dialog-centered" role="document">
           <div class="modal-content">
             <div class="modal-header">
-              <div class="modal-titel">
+              <div class="modal-title">
                 <h5>Document</h5>
+                <div class="btn-group" role="group" aria-label="Basic example">
+                    <button type="button" class="btn btn-secondary">Left</button>
+                    <button type="button" class="btn btn-secondary">Middle</button>
+                    <button type="button" class="btn btn-secondary">Right</button>
+                  </div>
+                  
               </div>
             </div>
           </div>