diff --git a/aqt/browser.py b/aqt/browser.py
index ae614d83f..6001b1954 100644
--- a/aqt/browser.py
+++ b/aqt/browser.py
@@ -1417,10 +1417,10 @@ class BrowserToolbar(Toolbar):
             if on:
                 fmt = '''\
 <a class=hitem title="%s" href="%s">\
-<img valign=bottom style='background: #000;' src="qrc:/icons/%s.png"> %s</a>'''
+<img valign=bottom style='border: 1px solid #aaa;' src="qrc:/icons/%s.png"> %s</a>'''
             else:
                 fmt = '''\
-<a class=hitem title="%s" href="%s"><img valign=bottom src="qrc:/icons/%s.png"> %s</a>'''
+<a class=hitem title="%s" href="%s"><img style="padding: 1px;" valign=bottom src="qrc:/icons/%s.png"> %s</a>'''
             return fmt % (title, link, icon, title)
         right = ""
         right += borderImg("info", "info", False, _("Info"))