diff --git a/www/css/ui.css b/www/css/ui.css
index 1a5ec26..67f6dd1 100644
--- a/www/css/ui.css
+++ b/www/css/ui.css
@@ -54,7 +54,7 @@ main>table.list.challenge th:nth-child(2){width:10rem;}
 main>table.list td:last-child>button{
     display:block;
     position:relative;
-    width:8rem;
+    min-width:8rem;
     height:100%;
     padding:0 1rem 0 1rem;