diff --git a/src/index.html b/src/index.html
index bf7b545..2c72ed2 100644
--- a/src/index.html
+++ b/src/index.html
@@ -1,4 +1,4 @@
-<div class="container">
+<div class="application">
   <form id="regexp-form">
     <textarea id="regexp-input" autofocus="autofocus" placeholder="Enter JavaScript-style regular expression to display"></textarea>
     <button type="submit">Display</button>
diff --git a/src/js/main.js b/src/js/main.js
index 0424573..5f491a8 100644
--- a/src/js/main.js
+++ b/src/js/main.js
@@ -4,7 +4,7 @@ import Parser from './parser/javascript.js';
 import _ from 'lodash';
 
 (function() {
-  if (document.body.querySelector('#content .container')) {
+  if (document.body.querySelector('#content .application')) {
     var regexper = new Regexper(document.body);
 
     regexper.bindListeners();
diff --git a/src/sass/main.scss b/src/sass/main.scss
index 9bfc63f..fe55f28 100644
--- a/src/sass/main.scss
+++ b/src/sass/main.scss
@@ -123,7 +123,7 @@ header {
 #content {
   padding: rhythm(1);
 
-  .container {
+  .application {
     position: relative;
     @include clearfix;