diff --git a/web/src/style.css b/web/src/style.css
index 5c100c5..0a8285b 100644
--- a/web/src/style.css
+++ b/web/src/style.css
@@ -34,6 +34,16 @@
   box-sizing: border-box;
 }
 
+/* No browser focus ring on form controls -- the border colour change is
+   highlight enough (components with more elaborate focus styles, e.g.
+   .card-row__text, override this with their own higher-specificity rule). */
+input:focus,
+textarea:focus,
+select:focus {
+  outline: none;
+  border-color: var(--accent);
+}
+
 body {
   margin: 0;
   font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;