Update example.html

Author: gnat

example.html

@@ -16,6 +16,7 @@
 				font-size: 2rem; /* 2rem = 20px in our setup. */
 			}
 			button {
+				font-size: 2rem;
 				padding: 2rem 2.4rem;
 				margin: 2rem;
 				cursor: pointer;