diff --git a/web/src/style.css b/web/src/style.css
index f389d7d..7b4f144 100644
--- a/web/src/style.css
+++ b/web/src/style.css
@@ -1050,13 +1050,16 @@ button[type="submit"]:disabled:not(.btn-icon),
 .btn-icon {
   flex: none;
   width: 2rem;
-  height: 2rem;
+  /* No explicit height -- .field-row/.kanban__new are flex rows with the
+     default align-items: stretch, so this fills the row to match its
+     compact field's height instead of guessing a value that has to be
+     kept in sync with it. */
   padding: 0;
   border: 1px solid var(--border);
   border-radius: var(--radius-sm);
   background: transparent;
   color: var(--muted);
-  font-size: 1.1rem;
+  font-size: 1.4rem;
   line-height: 1;
   display: inline-flex;
   align-items: center;