diff --git a/docs/assets/stylesheets/extra.css b/docs/assets/stylesheets/extra.css
index 7952143b..4cdce887 100644
--- a/docs/assets/stylesheets/extra.css
+++ b/docs/assets/stylesheets/extra.css
@@ -75,6 +75,11 @@ strong > em {
 body {
 	background-color: #424242;
 }
+.md-grid {
+  margin-left: auto;
+  margin-right: auto;
+  max-width: 80rem;
+}
 .md-typeset h1 {
 	color: #ffffff !important;
 }