contact messages: enlarge the trigger button's ✉️ (1.38em span)

frontend/src/assets/pagerite.css

@@ -923,6 +923,11 @@ article {
   cursor: pointer;
 }
 
+.contact-trigger .icon {
+  /* Match the corner ✉️'s optical size against the button text. */
+  font-size: 1.38em;
+}
+
 .contact-trigger:hover {
   color: var(--tab-hover, var(--bg));
   text-shadow: 0 0 0.1em;