diff --git a/static/index.html b/static/index.html
index 5201da7..63e0553 100644
--- a/static/index.html
+++ b/static/index.html
@@ -29,6 +29,8 @@
       <!-- main -->
       <script type="text/javascript" src="paints_chainer.js"></script>
   <!-- fileend -->
+  <!-- wColorPicker workaround for Firefox -->
+  <style type="text/css">.wColorPicker-palettes-holder {white-space: nowrap;}</style>
 </head>
 <body>
 
