diff --git a/_layouts/default.html b/_layouts/default.html
index cd933c81..01158d78 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -7,7 +7,7 @@
     <link href="{{ '/assets/css/style.css?v=' | append: site.github.build_revision | relative_url }}" rel="stylesheet">
   </head>
   <body>
-    <div class="container markdown-body my-5">
+    <div class="container-lg px-3 my-5 markdown-body">
       {% if site.title and site.title != page.title %}
         <h1><a href="{{ "/" | absolute_url }}">{{ site.title }}</a></h1>
       {% endif %}
