diff --git a/assets/sass/components/key-metrics/_googlesitekit-key-metrics-site-purpose-change-modal.scss b/assets/sass/components/key-metrics/_googlesitekit-key-metrics-site-purpose-change-modal.scss
index a90ed0c39e2..2a7d23e66e5 100644
--- a/assets/sass/components/key-metrics/_googlesitekit-key-metrics-site-purpose-change-modal.scss
+++ b/assets/sass/components/key-metrics/_googlesitekit-key-metrics-site-purpose-change-modal.scss
@@ -46,5 +46,15 @@
 				}
 			}
 		}
+
+		.mdc-dialog__actions {
+			border-top: none;
+
+			button {
+				@media (max-width: $bp-tablet) {
+					width: 100%;
+				}
+			}
+		}
 	}
 }