diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000000..1c38b6d763
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+gem 'bourbon', "~> 3.1.8"
+gem "sass", "~> 3.3.1"
+
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000000..56c6283885
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,15 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    bourbon (3.1.8)
+      sass (>= 3.2.0)
+      thor
+    sass (3.3.1)
+    thor (0.18.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bourbon (~> 3.1.8)
+  sass (~> 3.3.1)
diff --git a/core/client/assets/sass/screen.scss b/core/client/assets/sass/screen.scss
index 9c8173d178..6e4451e8dd 100644
--- a/core/client/assets/sass/screen.scss
+++ b/core/client/assets/sass/screen.scss
@@ -10,7 +10,7 @@
 @import "modules/mixins";
 /* Sass variables like colours, font sizes, basic styles. */
 
-@import "normalize.css";
+@import "normalize";
 /* Browser cross compatibility normalisation*/
 
 @import "modules/icons";