diff --git a/addons/website_blog/static/src/css/website_blog.css b/addons/website_blog/static/src/css/website_blog.css
index 4fafb05ae61..171f13c7941 100644
--- a/addons/website_blog/static/src/css/website_blog.css
+++ b/addons/website_blog/static/src/css/website_blog.css
@@ -22,9 +22,11 @@ p.post-meta {
 }
 
 .js_website_blog div#right_column section {
+  filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=60);
   opacity: 0.6;
 }
 .js_website_blog div#right_column section:hover {
+  filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
   opacity: 1;
   -webkit-transition: all 0.2s ease-out;
   -moz-transition: all 0.2s ease-out;
diff --git a/addons/website_blog/static/src/css/website_blog.sass b/addons/website_blog/static/src/css/website_blog.sass
index d7d865f827a..d467df2de47 100644
--- a/addons/website_blog/static/src/css/website_blog.sass
+++ b/addons/website_blog/static/src/css/website_blog.sass
@@ -23,7 +23,7 @@ p.post-meta
 .js_website_blog
     div#right_column
         section
-            opacity: 0.6
+            +opacity(0.6)
         section:hover
-            opacity: 1
+            +opacity(1)
             @include transition(all 0.2s ease-out)