diff --git a/rst.css b/rst.css
index f3efd84930..8db2caaaca 100755
--- a/rst.css
+++ b/rst.css
@@ -284,3 +284,8 @@ h1 tt, h2 tt, h3 tt, h4 tt, h5 tt, h6 tt {
 
 ul.auto-toc {
   list-style-type: none }
+
+img.boost-logo {
+  border: none;
+  vertical-align: middle
+}