diff --git a/assets/section-contact-form.css b/assets/section-contact-form.css
index aae4e19..bf7a8ac 100644
--- a/assets/section-contact-form.css
+++ b/assets/section-contact-form.css
@@ -24,6 +24,10 @@
   margin-top: 3rem;
 }
 
+.contact__button button {
+  width: 100%;
+}
+
 @media screen and (min-width: 750px) {
   .contact__button {
     margin-top: 4rem;