diff --git a/src/_includes/layout.njk b/src/_includes/layout.njk
index 1a320760..74d28724 100644
--- a/src/_includes/layout.njk
+++ b/src/_includes/layout.njk
@@ -3,7 +3,8 @@
 <html {% if rtl == "true" %}dir="rtl"{% endif -%}>
 <head>
     <title>{{ title }}</title>
-    <meta name="viewport" content="initial-scale=1.0">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta charset="utf-8">
     {% block external -%}{% endblock -%}
     {% block resources %}
         {% if mode == "jsfiddle" -%}
