mistake.

publish/quartz.custom.scss

@@ -2,10 +2,10 @@
 
 .page > #quartz-body {
   @media all and ($desktop) {
-    grid-template-columns: 260px minmax(0, 1fr) 220px;
+    grid-template-columns: 420px auto 280px;
   }
   @media all and ($tablet) {
-    grid-template-columns: 260px minmax(0, 1fr);
+    grid-template-columns: 420px auto;
   }
 }