diff --git a/public/css/icinga/main.less b/public/css/icinga/main.less
index 871d585e6..cd64ccb83 100644
--- a/public/css/icinga/main.less
+++ b/public/css/icinga/main.less
@@ -14,3 +14,15 @@ body {
   font-family: @font-family;
   font-size: @font-size;
 }
+
+h1 {
+  font-size: 18px;
+  line-height: 22px;
+  font-weight: normal;
+}
+
+h2 {
+  font-size: 16px;
+  line-height: 19px;
+  font-weight: normal;
+}