diff --git a/tinymce/index.html b/tinymce/index.html
index 68cc43fa49b88..0412e538e4f69 100644
--- a/tinymce/index.html
+++ b/tinymce/index.html
@@ -4,8 +4,9 @@
TinyMCE Formatting Demo
+
-
+
diff --git a/tinymce/style.css b/tinymce/style.css
new file mode 100644
index 0000000000000..a4f49af8fe675
--- /dev/null
+++ b/tinymce/style.css
@@ -0,0 +1,21 @@
+/**
+ * Basic
+ */
+
+html,
+body {
+ margin: 0;
+ padding: 0;
+ height: 100%;
+}
+
+* {
+ box-sizing: border-box;
+}
+
+body {
+ font: 13px/1.8 -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen-Sans", "Ubuntu", "Cantarell", "Helvetica Neue", sans-serif;
+ max-width: 720px;
+ margin: 60px auto;
+ color: #12181e;
+}