use rem instead of px

suhr · suhr · commit 4db945f36599 · 2015-08-31T16:29:22.000+03:00
diff --git a/css/screen.css b/css/screen.css
@@ -32,8 +32,8 @@ ul {
 }
 
 h1, h2, h3, h4, h5, h6 {
-  margin-top: 14px;
-  margin-bottom: 14px;
+  margin-top: 0.875rem;
+  margin-bottom: 0.875rem;
   line-height: 1.1;
 }
 
