From 32a10073c1143cd27843dd942c294e89aee692fe Mon Sep 17 00:00:00 2001
From: Xidorn Quan <me@upsuper.org>
Date: Fri, 19 May 2017 13:25:05 +1000
Subject: [PATCH] Align serialization of keyframes rule with Gecko.

---
 components/style/stylesheets.rs | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/components/style/stylesheets.rs b/components/style/stylesheets.rs
index 7dd567ccfcf..4b8438e59d9 100644
--- a/components/style/stylesheets.rs
+++ b/components/style/stylesheets.rs
@@ -575,18 +575,14 @@ impl ToCssWithGuard for KeyframesRule {
     where W: fmt::Write {
         try!(dest.write_str("@keyframes "));
         try!(self.name.to_css(dest));
-        try!(dest.write_str(" { "));
+        try!(dest.write_str(" {"));
         let iter = self.keyframes.iter();
-        let mut first = true;
         for lock in iter {
-            if !first {
-                try!(dest.write_str(" "));
-            }
-            first = false;
+            try!(dest.write_str("\n"));
             let keyframe = lock.read_with(&guard);
             try!(keyframe.to_css(guard, dest));
         }
-        dest.write_str(" }")
+        dest.write_str("\n}")
     }
 }