--- a/browser/components/preferences/in-content/privacy.xul
+++ b/browser/components/preferences/in-content/privacy.xul
@@ -607,16 +607,17 @@
                 label="&browserContainersEnabled.label;"
                 accesskey="&browserContainersEnabled.accesskey;"
                 preference="privacy.userContext.enabled"
                 onsyncfrompreference="return gPrivacyPane.readBrowserContainersCheckbox();"/>
       <label id="browserContainersLearnMore" class="learnMore text-link"
              value="&browserContainersLearnMore.label;"/>
       <spacer flex="1"/>
       <button id="browserContainersSettings"
+              class="accessory-button"
               label="&browserContainersSettings.label;"
               accesskey="&browserContainersSettings.accesskey;"/>
     </hbox>
   </vbox>
 </groupbox>
 
 <!-- Network -->
 <!-- Connection -->