diff --git a/src/styles/components/settings.css b/src/styles/components/settings.css
index b8d43d4b..c263e95a 100644
--- a/src/styles/components/settings.css
+++ b/src/styles/components/settings.css
@@ -19,6 +19,7 @@
 /* Zap splits preset buttons */
 .zap-preset-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; }
 .zap-preset-btn {
+  flex: 1;
   padding: 0.625rem 1.25rem;
   background: var(--color-bg-elevated);
   border: 1px solid var(--color-border-subtle);