diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index 8fabccc..613bb62 100755
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -23,7 +23,7 @@
       </time>
     </header>
 
-    <main class="nested-copy-line-height lh-copy serif f4 nested-links nested-img mid-gray pr4-l w-two-thirds-l">
+    <main class="nested-copy-line-height lh-copy serif f4 nested-links nested-img mid-gray pr4-l w-100">
         {{- .Content -}}
       {{- partial "tags.html" . -}}
       {{ partial "comments.html" .}}