diff --git a/site/assets/css/style.css b/site/assets/css/style.css
index b897c6e..c0be905 100644
--- a/site/assets/css/style.css
+++ b/site/assets/css/style.css
@@ -78,8 +78,8 @@
 }
 
 .container>.row {
-  margin-left: -15px;
-  margin-right: -15px;
+  margin-left: -0.75rem;
+  margin-right: -0.75rem;
 }
 
 /* Remove default outlines, use our focus ring */
@@ -1312,12 +1312,12 @@ h3.contact-title {
   float: right;
 }
 
-/* The Nome/Telemóvel row sits in Bootstrap columns (15px padding); cancel that
-   with negative margins so those inputs line up flush with the full-width Razão
-   and Mensagem fields below them. */
+/* The Nome/Telemóvel row sits in Bootstrap columns (12px gutter, BS5); cancel
+   that with negative margins so those inputs line up flush with the full-width
+   Razão and Mensagem fields below them. */
 .contact-form .row {
-  margin-left: -15px;
-  margin-right: -15px;
+  margin-left: -0.75rem;
+  margin-right: -0.75rem;
 }
 
 @media (min-width: 992px) {