diff --git a/atlas/templates/atlas/series_viewer.html b/atlas/templates/atlas/series_viewer.html
index b9fe9781..4c7ba87d 100755
--- a/atlas/templates/atlas/series_viewer.html
+++ b/atlas/templates/atlas/series_viewer.html
@@ -60,7 +60,7 @@ data-auto-cache-stack=true
                 data-bs-toggle="modal"
                 data-bs-target="#clone-findings-modal"
         >Clone existing finding</button>
-        <button id="reset-viewport-button">Reset viewport</button>
+        <button id="reset-viewport-button" class="btn btn-secondary">Reset viewport</button>
         <div id="finding-form">
             <div class="hide" id="hidden-form">
                 <form method="post" id="series_finding_form">