diff --git a/web/viewer.css b/web/viewer.css
index 90ea3b07c..78ef01d55 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -564,10 +564,6 @@ html[dir='rtl'] .splitToolbarButton > .toolbarButton {
   opacity: .5;
 }
 
-.toolbarButton.group {
-  margin-right: 0;
-}
-
 .splitToolbarButton.toggled .toolbarButton {
   margin: 0;
 }
diff --git a/web/viewer.html b/web/viewer.html
index 0d6469949..e796cea96 100644
--- a/web/viewer.html
+++ b/web/viewer.html
@@ -75,13 +75,13 @@ See https://github.com/adobe-type-tools/cmap-resources
       <div id="sidebarContainer">
         <div id="toolbarSidebar">
           <div class="splitToolbarButton toggled">
-            <button id="viewThumbnail" class="toolbarButton group toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs">
+            <button id="viewThumbnail" class="toolbarButton toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs">
                <span data-l10n-id="thumbs_label">Thumbnails</span>
             </button>
-            <button id="viewOutline" class="toolbarButton group" title="Show Document Outline (double-click to expand/collapse all items)" tabindex="3" data-l10n-id="document_outline">
+            <button id="viewOutline" class="toolbarButton" title="Show Document Outline (double-click to expand/collapse all items)" tabindex="3" data-l10n-id="document_outline">
                <span data-l10n-id="document_outline_label">Document Outline</span>
             </button>
-            <button id="viewAttachments" class="toolbarButton group" title="Show Attachments" tabindex="4" data-l10n-id="attachments">
+            <button id="viewAttachments" class="toolbarButton" title="Show Attachments" tabindex="4" data-l10n-id="attachments">
                <span data-l10n-id="attachments_label">Attachments</span>
             </button>
           </div>
@@ -186,7 +186,7 @@ See https://github.com/adobe-type-tools/cmap-resources
                   <span data-l10n-id="toggle_sidebar_label">Toggle Sidebar</span>
                 </button>
                 <div class="toolbarButtonSpacer"></div>
-                <button id="viewFind" class="toolbarButton group" title="Find in Document" tabindex="12" data-l10n-id="findbar">
+                <button id="viewFind" class="toolbarButton" title="Find in Document" tabindex="12" data-l10n-id="findbar">
                    <span data-l10n-id="findbar_label">Find</span>
                 </button>
                 <div class="splitToolbarButton hiddenSmallView">