diff --git a/docs/scss/dlex.scss b/docs/scss/_dlex.scss
similarity index 100%
rename from docs/scss/dlex.scss
rename to docs/scss/_dlex.scss
diff --git a/docs/scss/_mixin.css b/docs/scss/_mixin.css
new file mode 100644
index 0000000..71efcd4
--- /dev/null
+++ b/docs/scss/_mixin.css
@@ -0,0 +1,3 @@
+/usr/local/lib/ruby/gems/2.4.0/gems/sass-3.4.23/lib/sass/util.rb:1109: warning: constant ::Fixnum is deprecated
+      write ../css/mixin.css
+      write ../css/mixin.css.map
diff --git a/docs/scss/mixin.scss b/docs/scss/_mixin.scss
similarity index 100%
rename from docs/scss/mixin.scss
rename to docs/scss/_mixin.scss