Add .btn-area-1 for btn-areas with one button

web/static/css/input.css

@@ -19,6 +19,10 @@ textarea {
     @apply bg-slate-50 dark:bg-slate-950 border border-slate-200 dark:border-slate-800 h-32 rounded-md;
 }
 
+.btn-area-1 {
+    @apply grid grid-cols-1 gap-x-4 gap-y-1 mt-4;
+}
+
 .btn-area {
     @apply grid grid-cols-1 md:grid-cols-2 gap-x-4 gap-y-1 mt-4;
 }