diff --git a/lib/formatter.js b/lib/formatter.js
index 65c06bc..d5b8a37 100644
--- a/lib/formatter.js
+++ b/lib/formatter.js
@@ -17,7 +17,7 @@ function saveElement(css, el) {
     });
   }
   css = css + RULELIST_CLOSE;
-  return css;
+  return css.replace(/\t/g, atom.config.get('html-to-css.indent-characters'));
 }
 
 exports.format = function(json) {
diff --git a/lib/html-to-css.js b/lib/html-to-css.js
index 7a18c9a..cd53a7f 100644
--- a/lib/html-to-css.js
+++ b/lib/html-to-css.js
@@ -39,6 +39,12 @@ export default {
       "default": "&",
       "description": "Character(s) to output when grouping nested definitions"
     },
+    "indent-characters": {
+      "title": "Indent characters",
+      "type": "string",
+      "default": "\t",
+      "description": "Characters to indent nested code"
+    },
 
   },