fix #6950: use var for font-family

diff --git a/less/scaffolding.less b/less/scaffolding.less
index 715805a5a75a7aa2e7ac06daa1f9985e0035e9c1..d885c765edbf6df473f05e8aee2632d3ab3d5c57 100644 (file)
--- a/less/scaffolding.less
+++ b/less/scaffolding.less
@@ -24,7 +24,7 @@ html {
 body {
   margin: 0;
   color: @text-color;
-  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-family: @font-family-base;
   font-size: 14px;
   font-size: 1.4rem;
   line-height: 1.5;