diff --git a/aqt/deckbrowser.py b/aqt/deckbrowser.py
index 4b6271439..5d2fcd81a 100644
--- a/aqt/deckbrowser.py
+++ b/aqt/deckbrowser.py
@@ -48,16 +48,19 @@ class DeckBrowser(object):
     # HTML generation
     ##########################################################################
 
+    _dragIndicatorBorderWidth = "1px"
+
     _css = """
 tr { font-size: 12px; }
 a.deck { color: #000; text-decoration: none; }
 a.deck:hover { text-decoration: underline; }
-tr.deck td { border-bottom: thick solid transparent; }
+tr.deck td { border-bottom: %(width)s solid transparent; }
+tr.top-level-drag-row td { border-bottom: %(width)s solid transparent; }
 td.opts { white-space: nowrap; }
-tr.drag-hover td { border-bottom: 1px solid #aaa; }
-.extra { font-size: 90%; }
+tr.drag-hover td { border-bottom: %(width)s solid #aaa; }
+.extra { font-size: 90%%; }
 body { margin: 1em; -webkit-user-select: none; }
-"""
+""" % dict(width=_dragIndicatorBorderWidth)
 
     _body = """
 <center>