[style] [upgrade] moved to bootstrap 3
diff --git a/website/templates/html/blog_page.html b/website/templates/html/blog_page.html
index cf1f00e..0cabe6d 100644
--- a/website/templates/html/blog_page.html
+++ b/website/templates/html/blog_page.html
@@ -9,7 +9,7 @@
{% endblock %}
{% block content %}
-<div class="span12" itemscope itemtype="http://schema.org/BlogPost">
+<div class="col-span-12" itemscope itemtype="http://schema.org/BlogPost">
<h2 itemprop="name headline">{{ title }}</h2>
<!-- begin blog content -->