From 99853ad5171c511635263b3213827079cb107ff7 Mon Sep 17 00:00:00 2001
From: Matt Westcott <matt@west.co.tt>
Date: Tue, 7 Nov 2017 16:16:24 +0000
Subject: [PATCH] Prevent cssnano from 'optimising' z-index:9999 into z-index:
 1. Fixes #3944

---
 gulpfile.js/tasks/styles.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gulpfile.js/tasks/styles.js b/gulpfile.js/tasks/styles.js
index adf2b1fb2..6c34e13d4 100644
--- a/gulpfile.js/tasks/styles.js
+++ b/gulpfile.js/tasks/styles.js
@@ -26,6 +26,7 @@ var cssnanoConfig = {
     discardUnused: {
         fontFace: false,
     },
+    zindex: false,
 };
 
 gulp.task('styles', ['styles:sass', 'styles:css', 'styles:assets']);