diff --git a/static/style.css b/static/style.css
index 8edeb5e..fe3f619 100644
--- a/static/style.css
+++ b/static/style.css
@@ -93,6 +93,15 @@ button, .accordion-header {
     box-shadow: 0 1px 3px rgba(30,41,59,0.05);
     transition: background 0.2s;
 }
+
+/* Berechnungs-Buttons vergrößern */
+button[type="submit"] {
+    font-size: 1.1em;
+    padding: 0.8em 1.5em;
+    min-width: 140px;
+    margin-top: 1.2em;
+}
+
 button:hover, .accordion-header:hover {
     background: var(--primary-dark);
 }