diff --git a/_static/css/custom.css b/_static/css/custom.css
index cb80ed68c..ce9a69fd0 100644
--- a/_static/css/custom.css
+++ b/_static/css/custom.css
@@ -547,6 +547,7 @@ footer,
 
 .wy-nav-content {
     background-color: var(--content-background-color);
+    max-width: 900px;
 }
 
 .wy-body-for-nav {
@@ -556,7 +557,7 @@ footer,
 @media only screen and (min-width: 769px) {
     .wy-body-for-nav {
         /* Center the page on wide displays for better readability */
-        max-width: 1100px;
+        max-width: 1200px;
         margin: 0 auto;
     }
 }