diff --git a/Reader/read.css b/Reader/read.css
index 35c562f..732301c 100644
--- a/Reader/read.css
+++ b/Reader/read.css
@@ -16,6 +16,13 @@ body {
     background-color: var(--background-color);
 }
 
+@media (min-width: 696px) {
+    body {
+        width: 672px;
+        margin: 12px auto;
+    }
+}
+
 a {
     color: var(--tint-color);
 }