[major] upgrade to bootstrap 3
diff --git a/website/templates/pages/writers.html b/website/templates/pages/writers.html
index 9d660b8..5b254b0 100644
--- a/website/templates/pages/writers.html
+++ b/website/templates/pages/writers.html
@@ -3,7 +3,7 @@
 {% set title="Blog Writers" %}
 
 {% block content %}
-<div class="col col-lg-12">
+<div class="col-md-12">
 	<h2 id="blog-title">Blog Writers</h2>
 	{% if writers_introduction %}
 	<p>{{ writers_introduction }}</p>