diff --git a/doc/misc/doxygenextra.css b/doc/misc/doxygenextra.css
index 4c83419..bd67375 100644
--- a/doc/misc/doxygenextra.css
+++ b/doc/misc/doxygenextra.css
@@ -190,7 +190,8 @@ div.fragment {
 	border-top: 60px solid #2980b9;
 	background-color: #343131;
 	width: 250px !important;
-	position: fixed
+	height: 100% !important;
+	position: fixed;
 }
 
 #nav-tree