diff --git a/style.css b/style.css
index 21f5ca7..9fc6da0 100644
--- a/style.css
+++ b/style.css
@@ -245,6 +245,9 @@ blockquote > * + * {
   }
 
   .grid-list {
-    grid-template-columns: 1fr 1fr;
+    grid-template-columns: repeat(
+      auto-fit,
+      minmax(calc((100% - 1em) / 2), 1fr)
+    );
   }
 }
diff --git a/tap-snapshots/test/render.js.test.cjs b/tap-snapshots/test/render.js.test.cjs
index bb948ef..768b047 100644
--- a/tap-snapshots/test/render.js.test.cjs
+++ b/tap-snapshots/test/render.js.test.cjs
@@ -261,7 +261,10 @@ blockquote > * + * {
   }
 
   .grid-list {
-    grid-template-columns: 1fr 1fr;
+    grid-template-columns: repeat(
+      auto-fit,
+      minmax(calc((100% - 1em) / 2), 1fr)
+    );
   }
 }
 </style>