diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3186ead..6e5c400 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
-## [1.0.0] - 2021-01-28
+## [1.0.2] - 2021-01-28
+
+- Remove a position or a background class if a new one is added
+
+## [1.0.0 - 1.0.1] - 2021-01-28
 
 - isometric-css has been released
\ No newline at end of file
diff --git a/docs-src/public/404.html b/docs-src/public/404.html
new file mode 100644
index 0000000..47c4a1d
--- /dev/null
+++ b/docs-src/public/404.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Single Page Apps for GitHub Pages</title>
+    <script type="text/javascript">
+      // Single Page Apps for GitHub Pages
+      // MIT License
+      // https://github.com/rafgraph/spa-github-pages
+      // This script takes the current url and converts the path and query
+      // string into just a query string, and then redirects the browser
+      // to the new url with only a query string and hash fragment,
+      // e.g. https://www.foo.tld/one/two?a=b&c=d#qwe, becomes
+      // https://www.foo.tld/?/one/two&a=b~and~c=d#qwe
+      // Note: this 404.html file must be at least 512 bytes for it to work
+      // with Internet Explorer (it is currently > 512 bytes)
+
+      // If you're creating a Project Pages site and NOT using a custom domain,
+      // then set pathSegmentsToKeep to 1 (enterprise users may need to set it to > 1).
+      // This way the code will only replace the route part of the path, and not
+      // the real directory in which the app resides, for example:
+      // https://username.github.io/repo-name/one/two?a=b&c=d#qwe becomes
+      // https://username.github.io/repo-name/?/one/two&a=b~and~c=d#qwe
+      // Otherwise, leave pathSegmentsToKeep as 0.
+      var pathSegmentsToKeep = 1;
+
+      var l = window.location;
+      l.replace(
+        l.protocol + '//' + l.hostname + (l.port ? ':' + l.port : '') +
+        l.pathname.split('/').slice(0, 1 + pathSegmentsToKeep).join('/') + '/?/' +
+        l.pathname.slice(1).split('/').slice(pathSegmentsToKeep).join('/').replace(/&/g, '~and~') +
+        (l.search ? '&' + l.search.slice(1).replace(/&/g, '~and~') : '') +
+        l.hash
+      );
+
+    </script>
+  </head>
+  <body>
+  </body>
+</html>
diff --git a/docs-src/public/index.html b/docs-src/public/index.html
index 5ff8961..f78eea7 100644
--- a/docs-src/public/index.html
+++ b/docs-src/public/index.html
@@ -25,6 +25,32 @@
       Learn how to configure a non-root public URL by running `npm run build`.
     -->
     <title>isometric-css documentation</title>
+
+    <!-- Start Single Page Apps for GitHub Pages -->
+    <script type="text/javascript">
+      // Single Page Apps for GitHub Pages
+      // MIT License
+      // https://github.com/rafgraph/spa-github-pages
+      // This script checks to see if a redirect is present in the query string,
+      // converts it back into the correct url and adds it to the
+      // browser's history using window.history.replaceState(...),
+      // which won't cause the browser to attempt to load the new url.
+      // When the single page app is loaded further down in this file,
+      // the correct url will be waiting in the browser's history for
+      // the single page app to route accordingly.
+      (function(l) {
+        if (l.search[1] === '/' ) {
+          var decoded = l.search.slice(1).split('&').map(function(s) { 
+            return s.replace(/~and~/g, '&')
+          }).join('?');
+          window.history.replaceState(null, null,
+              l.pathname.slice(0, -1) + decoded + l.hash
+          );
+        }
+      }(window.location))
+    </script>
+    <!-- End Single Page Apps for GitHub Pages -->
+
   </head>
   <body>
     <noscript>You need to enable JavaScript to run this app.</noscript>
