typo

www/index.html

@@ -109,9 +109,9 @@
         <div class="modal-dialog modal-xl modal-dialog-centered" role="document">
           <div class="modal-content">
             <div class="modal-header">
-              <div class="row modal-title">Document</div>
-              <div class="row align-self-center">
-              <div class="btn-group" role="group" aria-label="Basic example">
+              <div class="modal-title">Document</div>
+              <div class="col align-self-center">
+                <div class="btn-group" role="group" aria-label="Basic example">
                   <button type="button" class="btn btn-secondary"><i class="fas fa-file-image"></i></button>
                   <button type="button" class="btn btn-secondary"><i class="fas fa-file-image"></i></button>
                   <button type="button" class="btn btn-secondary"><i class="fas fa-file-image"></i></button>