fix hr margins, remify border width

diff --git a/scss/_scaffolding.scss b/scss/_scaffolding.scss
index 6608d5bf4932897563c447eebb47e865dfdb3e4c..5575812328f1ea5a78bd804e811ad31cc87fe502 100644 (file)
--- a/scss/_scaffolding.scss
+++ b/scss/_scaffolding.scss
@@ -108,10 +108,10 @@ img {
 // Horizontal rules
 
 hr {
-  margin-top:    $line-height-computed;
-  margin-bottom: $line-height-computed;
+  margin-top:    $spacer;
+  margin-bottom: $spacer;
   border: 0;
-  border-top: 1px solid $hr-border;
+  border-top: .05rem solid $hr-border;
 }