diff --git a/internal/web/static/app.css b/internal/web/static/app.css
index b6f9634..bcbf27d 100644
--- a/internal/web/static/app.css
+++ b/internal/web/static/app.css
@@ -129,7 +129,7 @@ body {
 
 /* new paste page */
 .deck {
-  display: grid; grid-template-columns: 1fr 300px; gap: 16px;
+  display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px;
   padding: 16px 20px 20px; height: calc(100vh - 76px);
   max-width: 1400px; margin: 0 auto;
 }