From 00525de03f4035300d38accc222ced32c960db8d Mon Sep 17 00:00:00 2001
From: Simon Knox <psimyn@gmail.com>
Date: Wed, 20 Jun 2018 16:39:15 +1000
Subject: fix z-index and vertically center

---
 app/assets/stylesheets/pages/notes.scss | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/assets/stylesheets/pages/notes.scss b/app/assets/stylesheets/pages/notes.scss
index e04100b5a9e..6e44fca7a1b 100644
--- a/app/assets/stylesheets/pages/notes.scss
+++ b/app/assets/stylesheets/pages/notes.scss
@@ -624,15 +624,17 @@ ul.notes {
 .line_holder .is-over:not(.no-comment-btn) {
   .add-diff-note {
     opacity: 1;
+    z-index: 101;
   }
 }
 
 .add-diff-note {
   @include btn-comment-icon;
   opacity: 0;
-  margin-top: -2px;
   margin-left: -55px;
   position: absolute;
+  top: 50%;
+  transform: translateY(-50%);
   z-index: 10;
 }
 
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